Unit 9 Test

Last updated over 3 years ago
16 questions
0

By submitting this assessment, I am affirming that I have not given or received any unauthorized help on this assignment, and that this work is my own.

2

Find the root(s) of the function by graphing.


If there are no roots, just type None.
If there is more than one solution, put a comma and no spaces between your answers.
Only write the numerical values. You don't need the x= part.
Round to the nearest hundredth, if necessary.

3

Solve the quadratic equation by taking square roots. Show your work to justify your answer.


Write your answer as exact number(s). (Remember to simplify your square roots as much as possible).

If there is No Solution, just type None.
If there is more than one solution, put a comma and no spaces between your answers.
Only write the numerical values. You don't need the x= part.

3

Solve the quadratic equation by factoring. Show your work to justify your answer.


Write your answer as exact number(s). (Remember to simplify your square roots as much as possible).

If there is No Solution, just type None.
If there is more than one solution, put a comma and no spaces between your answers.
Only write the numerical values. You don't need the x= part.

2

Which of the following is a one of the equations that will find a solution to the quadratic equation? (Which factor is set up in an equation correctly?)  Show your work to justify your answer.

3

Find the zero(s) of the quadratic function. Do not just say, used graphing calcultor. Show your work to justify your answer.


Write your answer as exact number(s). (Remember to simplify your square roots as much as possible).

If there are no zeros, just type None.
If there is more than one solution, put a comma and no spaces between your answers.
Only write the numerical values. You don't need the x= part.

2

Which has correctly substituted into the quadratic formula to solve the equation?


2

What are the solutions for the equation? Do not just say, used graphing calcultor. Show your work to justify your answer.

4

What are the x-intercept(s) of the equation. Do not just say, used graphing calcultor. Show your work to justify your answer.


Write your answer as exact number(s). (Remember to simplify your square roots as much as possible).

If there is No Solution, just type No.
If there is more than one solution, put a comma and no spaces between your answers.
Only write the numerical values. You don't need the x= part.

2

Which of the following would be a solution for this quadratic equation? Do not just say, used graphing calcultor. Show your work to justify your answer.

1

Which type of regression best fits the data?


3

Type the equation for the curve of best fit for #12. Round to the nearest hundredth, if necessary.

1

The table shows the time needed to roast turkeys of different weights. Which type of regression best fits the data?


2

Type the equation for the curve of best fit for #13. Round to the nearest hundredth, if necessary.


2

While grocery shopping, Mr. Long was feeling super hungry so he bought himself a 37 pound turkey. Using your equation for the Curve of Best Fit from question Number 14, approximately how long would it take Mr. Long to cook his turkey? Round to the nearest hundredth, if necessary.

1

Would the prediction that you made in Number 15 regarding the amount of time that it would take Mr. Long to cook the 37 pound turkey be considered Interpolation or Extrapolation?