The given statement is false. If a sample is selected using random sampling methods, the primary reason that the sample mean might be different from the corresponding population mean is not that the sample might be biased.
Because random sampling ensures that results obtained from the sample should approximate what would have been obtained if the entire population had been measured. And the simplest random sample allows all the units in the population to have an equal chance of being selected. In this case, the sample might not be biased.
What is random sampling method?Random sampling is a part of the sampling technique where each sample has an equal probability of being chosen. A sample chosen randomly is meant to be an unbiased representation of the total population.
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Wesley wants to have at least $50 to spend each day of his 7-day vacation. He plans to save
$30 each month for 12 months. Which of the following shows that Wesley will save enough
money for his vacation? Choose all that apply.
A.
Multiply 50 × 7 to get 350 and 30 × 12 to get 360. Since 350 < 360, Wesley will save enough
money for his vacation.
B.
Multiply 50 × 7 to get 350 and 30 × 12 to get 360. Subtract 360 – 350 to get 10. Since 10 > 7,
Wesley will save enough money for his vacation.
C.
Multiply 30 × 12 to get 360. Then divide 360 ÷ 50 to get 7 R10. Wesley will save $10 more
than he needs.
D.
Multiply 30 × 12 to get 360. Then divide 360 ÷ 7 to get 51 R3. Wesley will have $51 for each
day plus $3 left over.
The option that shows that Wesley will save enough money for his vacation is D. Multiply 30 × 12 to get 360. Then divide 360 ÷ 7 to get 51 R3. Wesley will have $51 for each.day plus $3 left over.
Which of the following shows that Wesley will save enough money for his vacation?Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations.
In this situation, Wesley wants to have at least $50 to spend each day of his 7-day vacation. He plans to save $30 each month for 12 months.
This will be illustrated thus:
(30 × 12) / 7
= 51 R 3
This shows that he'll have enough money. The correct option is D.
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There are two investment options: Option 1: An initial investment of $5 that increases by 50% every year. Option 2: An initial investment of $0.01 that doubles every year. Write an equation for each option to model the value A of the account after x years
Equation for each option to model the value A of the account after x years is 5+ 5/nⁿ and 2ˣ 0.01.
What is an equation?
In arithmetic,an equation may be a formula that expresses the equality of 2 expressions, by connecting them with the sign =.
Main body:
for option 1
initial investment is $5 after 1 year investment is
5+5/2
after 2 year 5+5/2+(5+5/2)/2=5+5/2+5/2²
continuing this way we get the formula
5+ 5/nⁿ
for option 2
after 1 year money becomes 2*0.01
after 2 year money becomes 2²*0.01
after x year money becomes 2ˣ 0.01
Hence the forumla for each option is as provided.
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4 cars need a new paint job. A body shop offers 15 different colors of paint. All the cars can be painted at the same time. Some cars may have the same color paint. How many possible paint jobs can be done on the 4 cars?
Group of answer choices
a) 15^4
b) P(15, 4)
c) (15-4)!
d) C(15, 4)
The number of possible paint jobs that can be done on the 4 cars can be determined by permutation (15,4). That is option B.
What is permutation?Permutation is defined as the various number of ways a data set can be arranged to arrive at a definite value.
the number of colours offered by the paint shop = 15
The number of cars the need a new paint job = 4
To find the possible number of colour that can be used permutation (15,4) is carried out.
That is,
= 15!/(15-4)!
= 15!/11!
= 15×14×13×12×11×10×9×8×7×6×5×4×3×2×1/11×10×9×8×7×6×5×4×3×2×1
or 15×14×13×12×11!/11!
= 15×14×13×12
= 32,760
Therefore, there would be 32,760 possible paint jobs that can be carried out on the 4 cars.
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A parking garage charges $5 for the first hour, $10 for up to two hours, and $12 for the entire day. Let G be the dollar cost of parking for t hours. Is t a function of G? Explain your reasoning. (pleaseeee help I will mark you brainliest.)
T is not a function of G as they don't have a constant of proportionality.
How to illustrate the equation?An equation is the statement that illustrates the variables given. In this case, two or more components are taken into consideration to describe the scenario.
It should be noted that the constant of proportionality simply means the ratio that relates two given values in what is known as a proportional relationship. In this case, other names for the constant of proportionality are the constant ratio, constant rate, unit rate, constant of variation, or the rate of change
Since the parking garage charges $5 for the first hour, $10 for up to two hours, and $12 for the entire day. This implies that they don't have a constant of proportionality.
In this case, the time doesn't have an effect on amount paid.
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Find using Function Notation
Given the f(x) graph below, find the value of each expression.
Find f(0)
Find f(x) = -3
The values of x where f(x) is 0 to determine a function's zeros.
How can determine from a graph that f/x)?The set of all x for which the f(x) graph crosses the x-axis is the solution of f(x) = 0. The set of all x for which the graph of f is strictly above the x-axis is the solution of f(x) > 0
In general, finding the zeros of the function f(x) involves setting the function to zero. The zeroes of the function are the values of x that correspond to the set equation. Find the values of x where f(x) = 0 to determine a function's zeros.
f ( x)=- 3 is a horizontal line that connects to the x-axis, hence there is no x-intercept and the y-intercept is ( 0, -3).
The y-intercept is ( 0, -3)
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Which of the following statement(s) is/are NOT TRUE for binary search algorithm? (select all that apply] * Binary search algorithm can be used for any arrays. Binary search algorithm can be implement using either iterative or recursive solutions. The worst-case time complexity of binary search is greater than sequential search Binary search algorithm uses the divide and conquer strategy. None of the above
are NOT true for binary search algorithm.
Now, According to the question:
Options 1, 3 are NOT true for binary search algorithm
Hence, Binary search algorithm can be used for any arrays.
and, The worst-case time complexity of binary search is greater than sequential search
are NOT true for binary search algorithm.
In the question:
Which of the following statement(s) is/are NOT TRUE for binary search algorithm? (select all that apply]
Binary search algorithm can be used for any arrays. Binary search algorithm can be implement using either iterative or recursive solutions. The worst-case time complexity of binary search is greater than sequential search Binary search algorithm uses the divide and conquer strategy. None of the aboveLearn more about Algorithm at:
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If the monthly payment is $8,750.00 for a 25-year fully amortizing mortgage that has an annual interest rate of 5.50%, what is the initial loan amount? Group of answer choices
Using monthly payment formula, the principal of the facility paying a monthly payment of $8750 for 25 years at a rate of 5.50% is $1,424,878.39
Monthly PaymentThe monthly payment is the amount paid per month to pay off the loan in the time period of the loan. When a loan is taken out it isn't only the principal amount, or the original amount loaned out, that needs to be repaid, but also the interest that accumulates.
The formula to calculate the monthly payment of a facility is;
A = P[(r(1 + r)ⁿ] / [(1 + r)ⁿ - 1]
Monthly payment (MP) = 8750time (t) = 25 yearsRate (r) = 5.50%Principal (P) = ?Number of payment (n) = number of months in a year * time of facilitySubstituting the values into the formula and solving for p
P = $1,424,878.39
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Determine the equation that represents the proportional relationship shown in each table below.
Drag an equation into the box beside each table.
k=4/5h k=5/4h h=1/5 k h=5/1 k
The equations of the proportional relationships from the table are k = 5h, k = 5/4h and k = 1/5h
How to determine the equations of the proportional relationships?From the question, we have the following parameters that can be used in our computation:
Table 1Table 2Table 3The equation of a proportional relationship is represented as
k = Y/X * h
Where
(X, Y) is the coordinate of any ordered pair from the function or table
Using the above as a guide, we have the following:
Table 1
k = 10/2 * h
Evaluate the products and the quotient
k = 5h
Table 2
k = 5/4 * h
Evaluate the products and the quotient
k = 5/4h
Table 3
k = 5/25 * h
Evaluate the products and the quotient
k = 1/5h
Hence, the equations are k = 5h, k = 5/4h and k = 1/5h
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Lauren was given a gift card for a coffee shop. Each morning, Lauren uses the card to buy one cup of coffee. The original amount of money on the gift card was $10 each cup of coffee costs $2. Make a table of values and then write an equation in terms of x, representing the amount money remaining on the card after buying x cups of coffee.
The amount of money left on the gift card, in term of the number of cups, a Lauren has bought is represented by the equation would be A = 10 - 2a.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
We are given that from the task content that the total amount of money Lauren has initially is $10.
Hence, each cup of coffee costs $2.
Since the amount of money Lauren has left each time,
That is related to the number of coffee cups bought by the equation;
A = 10 -2a.
where a ranges be between 0 and 5.
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Round to the nearest tenth.
The population of Laredo, Texas, was about 215,000 in 2007. It was about 123,000 in 1990. If we assume that the
population growth is constant and y represents the number of years after 1990, write a linear equation to find p,
Laredo's population for any year after 1990.
A linear equation to find p, Laredo's population for any year after 1990 is 5441t + 123000.
What is a linear equation?
A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."
Here, we have
Given:
t = the number of years after 1990.
So, for 1990, t = 0. So the coordinate is (0, 123000).
For 2007, t = 17. So the coordinate is (17, 215500).
Slope = (215500 - 123000)/17
Slope = 5441
P = 5441t + b,
b = 123000
P = 5441t + 123000
Hence, a linear equation to find p, Laredo's population for any year after 1990 is 5441t + 123000.
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Could someone help me solve this?
30 points !! Please help now math
The given 4th degree polynomial is ,[tex]f(x)=(x+5)(x+1)^2(x-2)[/tex] zeroes of the equation are -5,-1,2
How to write equation of 4th degree polynomial from given graph?A fourth-degree polynomial, or quartic function, is one that has a variable raised to the fourth power as its highest order term.
If the highest order term is positive or negative, a fourth-degree polynomial's graph will frequently resemble a M or a W.
The function will reach infinity on both sides if the leading term's coefficient, a, is positive.
The function will extend to minus infinity on both sides if the coefficient an is negative.
The function's y-intercept, or the point at which the function crosses the y-axis, is indicated by the word a0. The x-intercepts are revealed by the function's roots.
Inflection Points are roots of double derivate equation.
Calculation:Given;
From the graph, x-intercepts are -5,-1,2.
That gives us (x+5),(x+1),(x-2) are factors of the function;
As at [tex]x=-1[/tex] graph touches x axis (x+1) is a double factor of f(x)
That leaves us with [tex](x+5),(x+1)^2,(x-2)[/tex] as factors of f(x);
[tex]f(x)=(x+5)(x+1)^2(x-2)[/tex];
From graph inflections points are -2.686,0.186;
That gives [tex]f^|^|(x)=(x+2.686)(x-0.186)[/tex]
The given 4th degree polynomial is ,[tex]f(x)=(x+5)(x+1)^2(x-2)[/tex] zeroes of the equation are -5,-1,2
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Given the plot of normal distributions A and B below, which of the following statements is true? Select all correct answers.
A has the larger standard devlation.
What is standard devlation?
The standard deviation is a statistic that expresses how much variation or dispersion there is in a set of values. While a high standard deviation suggests that the values are dispersed over a wider range, a low standard deviation suggests that the values tend to be close to the set mean.
We are given two plots of normal distributions A and B.
The mean of a normal distribution is located at the center of the plot.
Since the centers of both of the normal distributions A and B seems to be aligned, therefore, they both seems to have equal means.
The standard deviation basically determines the shape of the distribution.
As you can see, the normal distribution A is more spread out and thus has a larger standard deviation than normal distribution B.
Therefore, the two correct options are
• The means of A and B are equal.
• A has larger standard deviation.
Complete question: Given the plot of normal distributions A and B below, which of the following statements is true? Select all correct answers.
Select all that apply:
A has the larger mean.
B has the larger mean.
The means of A and. Q jual.
A has the larger standard devlation.
B has the larger standard deviation.
The standard deviations of A and B are equal.
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what values make the inequality b≤-6b≤−6 true
The values which are less than -7 on the number line makes the value true.
b≤-6
-7≤-6
-9≤-6
-256≤-6
only in the case where b = -6 satisfy only equality condition not less than condition. Other than this remaining other values which are less than -7 on the number line including rational numbers , decimal numbers, all negative numbers which are less than -6 satisfy.
The values which are less than -7 on the number line makes the value true
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Question what makes the value Inequality b≤-6 is true for what values of b?
12. Carly's family is going to buy cell phones for the entire family. After some research they have narrowed their choices
down to 2 companies. AT&T charges a monthly rate of $100 plus $15 for each phone on the account. Their competitor,
Sprint, charges a flat monthly fee of $200 and they will receive an unlimited number of phones on the account.
a. Write an equation for the cost of each cell phone provider and then graph the equations.
AT&T:
Sprint:
b. Use any method to determine which company would be cheaper if Carly's family consists of Carly, mom, dad, two brothers, and one sister. Explain your reasoning
Answer:
Step-by-step explanation:
a. The equation for the cost of AT&T would be $100 + $15n, where n is the number of phones on the account. The equation for the cost of Sprint would be $200.
We can graph these equations on a coordinate plane with the x-axis representing the number of phones on the account and the y-axis representing the monthly cost. The graph for the cost of AT&T would be a straight line starting at the point (0,100) and going through the point (1,115), (2,130), etc. The graph for the cost of Sprint would be a horizontal line at the y-coordinate of 200.
b. In order to determine which company would be cheaper for Carly's family, we can simply plug in the number of phones they have (5) into each of the equations we derived in part a. This would give us a cost of $200 for AT&T and $200 for Sprint. In this case, both companies would be equally cheap for Carly's family.
Alternatively, we could graph the equations and see which company's line is lower on the y-axis for the given number of phones (5). This would also show that both companies would be equally cheap for Carly's family in this case.
Ava’s runs at a rate of 15 kilometers per hour. What is Ava’s speed in meters per minute?
Answer:
250 meters per minute.
Step-by-step explanation:
1 km = 1000 m
15 km = 15*1000 = 15000 m
1 hour = 60 min
Then:
15km/h = 15000km/60minutes
= 250 meter per minute
Answer:250 meters / minute
Step-by-step explanation:1 km/h = 16.66667 m/min
Hi can you guys please help me create an ppt presentation on excel these are what it should include.
A bar graph
A line graph
A pie chart
Payslip
Table with all the employees names and position.
These should be connected to one topic. All illustration should be connected.
There should also be the meaning of Excel
And you can also add in information if you'd like or fun facts about excel
100/_
You can make a chart in PowerPoint or Excel. If you have lots of data to chart, create your chart in Excel, and then copy it into your presentation. This is also the best way if your data changes regularly and you want your chart to always reflect the latest numbers. In that case, when you copy and paste the chart, keep it linked to the original Excel file.
To create a simple chart from scratch in PowerPoint, click Insert > Chart and pick the chart you want.
1. Click Insert > Chart.
2.Click the chart type and then double-click the chart you want.
3.In the worksheet that appears, replace the placeholder data with your own information.
4.When you insert a chart, small buttons appear next to its upper-right corner. Use the Chart Elements Chart Elements button button to show, hide, or format things like axis titles or data labels. Or use the Chart Styles Customize the Look of Your Chart button button to quickly change the color or style of the chart.
What is excel ?
Excel is a spreadsheet program from Microsoft and a component of its Office product group for business applications. Microsoft Excel enables users to format, organize and calculate data in a spreadsheet.
The main uses of Excel include: Data entry. Data management. Accounting.
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A taste test asks people from Texas and California which pasta they prefer, brand A or brand B. This table shows the results,
Answer:
D. 0.53
Step-by-step explanation:
California = 90
Total of those who prefer Brand A = 170
To find the percentage, you do:
90/170 × 100 = 52.941...
However you have to round it to two decimal points, hence you do:
52.941 ≈ 53%
53% = 0.53
This is due to 53% representing 53/100 = 0.53
Therefore, the probability that the person that likes brand A is from California is 0.53
:)
equations c= 5/9(F-32
When the temperature is 30° in Celsius, the temperature in Fahrenheit is 86.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
The given equation to find the temperature,
C= 5/9(F-32) (1)
Here, C represents the temperature in Celsius,
And F represents the temperature in Fahrenheit.
To find the temperature in Fahrenheit, when C = 30°,
Substitute C = 30° in equation (1),
30 = 5/9(F - 32)
6 x 9 = F - 32
54 = F - 32
F = 86
The temperature in Fahrenheit is 86.
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"Find the slope of the line that passes through all of the points
Find the stope of the line that passes through all of the points on the table."
By using the formula for slope, it can be calculated that
The slope of the given line is 10
What is slope of a line?
Slope of a line is the tangent of the angle that the line makes with the positive direction of x axis.
If [tex]\theta[/tex] is the angle that the line makes with the positive direction of x axis, then slope (m) is given by
m = [tex]tan \theta[/tex]
If the line passes through [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex], slope is calculated by the formula
Slope = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]
Here, the line passes through (2, 3) and (3, 13)
Slope = [tex]\frac{13 - 3}{3-2}[/tex]
Slope = 10
So the slope of the given line is 10
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HELP What is the solution to this inequality? 6.9 < x−3 1/2
Answer:
Solve for x
by simplifying both sides of the inequality, then isolating the variable.
Inequality Form: x>10.4
Interval Notation: (10.4,∞)
Step-by-step explanation:
A computer costs £ 964. A tax of 18.5% is then added to the cost of the computer.
Work out the amount of tax that is added to the cost of the computer.
Answer:
£ 178.34 tax amount
Step-by-step explanation:
A computer costs £ 964. A tax of 18.5% is then added to the cost of the computer. Work out the amount of tax that is added to the cost of the computer.
18.5% tax = 0.185 tax rate
0.185 tax rate * £ 964 = £ 178.34 tax amount
Which of the following expressions are equivalent to - (8/3)
The solution is, the following expressions are equivalent to 4⁻³ / 4⁻⁸
A. 4^8/4^3
D. 4⁵
What is an exponent in math?An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.
here, we have,
We have to calculate to find the result -
The expression is = 4^(-3)/4^(-8)
According to the indices rule, the power will be deducted if it is a division.
Therefore, a^m/a^n = a^(m-n)
Using that formula,
4⁻³ / 4⁻⁸
= 4⁸ / 4³
= 4⁽⁸⁻³⁾
=4⁵
Therefore, the answer choice D is the option, and the answer is 4^5.
Option A is also correct.
Because we can find 4^5 with the help of that option.
Alternative way,
4^(-3)/4^(-8)
= 4^(-3+8)
= 4^(8-3)
= 4^8/4^3
In the is way, we can also find option A is correct.
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complete question:
Which of the following expressions are equivalent to 4^-3/4^-8?
△ABC has vertices at A(-2, 4), B(-1, 1), and C(2, 2). The slope of AB¯¯¯¯¯¯¯¯ is , the slope of BC¯¯¯¯¯¯¯¯ is , and the slope of AC¯¯¯¯¯¯¯¯ is . △ABC a right triangle because
The slope of AB -3
The slope of BC 1/3
The slope of AC -1/2
△ABC a right triangle because two lines are perpendicular shown by a negative reciprocal slope -3 and 1/3
How to determine the slopesThe slope is represented as m, The slope by definition is the ratio change of the output values to the input values
The slope, m using the points A(-2, 4), and B(-1, 1)
m = (y₀ - y₁) / (x₀ - x₁)
m = (4 - 1) / (-2 - -1)
m = (3) / (-1)
m = -3
The slope, m using the points B(-1, 1), and C(2, 2)
m = (1 - 2) / (-1 - 2)
m = (-1) / (-3)
m = 1/3
The slope, m using the points A(-2, 4), and C(2, 2)
m = (4 - 2) / (-2 - 2)
m = (2) / (-4)
m = -1/2
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The number of miles driven by Harper is directly proportional to the number of gallons she used.
How many miles would she drive on } 50 gallons?
Answer:
Below
Step-by-step explanation:
From the data , the miles per gallon is
199.2 mi / 6 gal or 265.6 mi / 8 gal or 863.2 / 26
= 33.2 mi/gal
for 50 gallons this would be
33.2 mi / gal * 50 gal = 1660 mi
Please help this is for a quiz!
A baby weighed only 14.4 ounces at birth. How much lighter was she than an average baby, who weighs about 7lbs 8 ounces?
The baby is 105.6 ounces or 6.96 pounds lighter than an average baby.
What is weight ?Weight is the measurement of Gravitational force on an object. It can be zero as in the space.
We are given in the question that A baby weighed only 14.4 ounces at birth the weight of an average baby is 7lb 8 ounces.
1 lb = 16 ounce
Therefore an average baby weight = 7 x 16 + 8 = 120 ounces
The baby weight is just 14.4 ounces
Hence, the baby is 120 - 14.4 = 105.6 ounces lighter than an average baby.
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8x-4=36
Solve for x please
Answer: x=5
Step-by-step explanation:
isolate x
8x-4+4=36+4
8x=40
x=5
Answer:
x=5
Step-by-step explanation:
You would first want to add 4 to both sides. Then divide 40 and 8 by 8 and you get x=5.
A small cube has the volume shown. Its side length is 3.5 in. less than a second, larger cube. What is the volume of the larger cube?
Volume:85 in^3
Answer:
not possible
Step-by-step explanation:
Answer:
[tex]493.039 \;in^3[/tex]
Step-by-step explanation:
If each side of the cube is [tex]a[/tex] then the volume of the cube is given by [tex]a^3[/tex]
If Volume is [tex]V[/tex] then each side [tex]a = \sqrt[3]{V}[/tex]
Here we are given the volume of the smaller cube as [tex]85\; in^3[/tex]
So each side of this cube = [tex]\sqrt[3]{85} = 4.396 \approx 4.4 \;in[/tex]
and each side of the larger cube [tex]= 4.4 + 3.5 = 7.9\;in[/tex]
Volume of larger cube [tex]= 7.9^3 = 493.039 \; in^3[/tex]
I need a answer using the race method (high school level)
and i will make it worth your time
What do you think you could do to show this statement is true?
How could you manipulate this equation to allow you to state this.
Answer:
Step-by-step explanation:
Well, there are the same amount of numbers in each equation. You can take the a from both equations, raise it to the second power, then do the same to the b. The addition sign will automatically disappear because you've added the two components together. You'll use subtraction to get your answer. I think.
Look at photo for problem
Just need chart filled out
5. y=(x+4)(x-1)
On solving the given equation y=(x+4)(x-1) the point on the graph are as follows:
(-4,0), (-1,0), (2,6), (-3,-4) &(0,-4)
What is a graph?
A relation is a specific instance of a function graph. A function is truly equivalent to its graph in set theory and the current mathematical underpinnings.
It is frequently more helpful to think about functions as mappings, which include the sets that constitute the domain and the codomain in addition to the relationship between input and output. For instance, the codomain should be considered while determining if a function is onto (surjective) or not. The codomain of a function is not determined by the graph alone.
It is typical to use the phrases function and graph of a function interchangeably since, although referring to the same thing, they suggest distinct ways of looking at it.
1)
let y=0
0=(x+4)(x-1)
i.e. x = -4 and -1
2)
Let x =0
y=(0+4)(0-1)
y=-4
3)
Let x = 2
y=(2+4)(2-1)
y=6
4)
Let x = -3
y=(-3+4)(-3-1)
y=-4
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