CHAPTER



Rational and Radical Relationships

Test Form A

Select the best answer.

1. Which equation is best represented

by the statement “x varies jointly with

y and z”?

A x ’ kyz B [pic]

2. P varies inversely with Q, and P ’ 12 when Q ’ 8. Find P when Q ’ 3.

F 2

G 4.5

H 32

3. Simplify [pic].

A [pic]

B [pic]

4. Simplify [pic].

F 1 H [pic]

G [pic]

5. Which function is continuous?

A [pic]

B [pic]

6. Identify all asymptotes of [pic].

F vertical asymptote: x ’ −2

horizontal asymptote: y ’ 3

G vertical asymptote: x ’ −2

horizontal asymptote: y ’ 4

7. How many solutions are there to the equation [pic]?

A 0

B 1

C 2

8. Which could be the equation for

the graph?

[pic]

F [pic]

G [pic]

H [pic]

9. Solve [pic].

A x ’ −8 B x ’ 6

10. Write an equation that represents the statement “P varies directly with Q and inversely with T.”

Rational and Radical Relationships

Test Form A continued

11. P varies directly with Q and inversely

with R, and P ’ 18 when Q ’ 6 and

R ’ 2. Find P when Q ’ 20 and R ’ 10.

12. Simplify [pic].

13. Simplify [pic].

14. If [pic] is a continuous function, what must be true of a?

15. Identify all asymptotes of

[pic].

16. Find the solution set for the equation [pic].

17. If [pic] is transformed by translating it 2 units up, and then reflecting it over the x-axis, what will

the resulting function be?

18. Solve [pic].

Rational and Radical Relationships

Answers continued

11. [pic]

12. 2

13. 2

14. [pic]

15. 4

16. [pic]

Unit 3 Test Form A

1. A

2. H

3. A

4. F

5. A

6. F

7. B

8. H

9. B

10. [pic]

11. 12

12. [pic]

13. [pic]

14. [pic] (2

15. HA at y ( 0;  VA at x ( (3

16. {(3, 4}

17. [pic]

18. x ( 4.5

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