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- 1. Multiple-choice3 minutes1 ptIn a direct variation, y=39 when x=3. Find the value of y when x=2.26358.52
- 2. Multiple-choice5 minutes1 pt
Suppose y varies directly with x when y=6 and x=18. What is y when x=72?

20

18

24

50

- 3. Multiple-choice5 minutes1 pt
Suppose y varies directly with x when y=6 and x=18. What is y when x=72?

20

18

24

50

- 4. Multiple-choice5 minutes1 pt
Suppose y varies directly with x when y=2 and x=5. What is y when x=35?

20

10

14

18

- 5. Multiple-choice5 minutes1 pt
Suppose y varies inversely with x. If y=16 when x=4, what is y when x=3?

21.3

12

15

3

- 6. Multiple-choice5 minutes1 pt
Suppose y varies inversely with x. If y=3 when x=5, what is x when y=2.5?

10

6

7

15

- 7. Multiple-choice5 minutes1 pt
Suppose y varies jointly with x and z, and y=24 when x=2 and z=1. Find y when x=12 and z=2.

288

48

24

144

- 8. Multiple-choice5 minutes1 pt
Suppose y varies directly with x, and y=8 when x=2. Find x when y=24

6

196

12

48

- 9. Multiple-choice5 minutes1 pt
If y varies directly as x and y=132 when x=11, find x when y=396.

33

22

4752

3.667

- 10. Multiple-choice5 minutes1 pt
If y varies jointly as x and z, and y=60 when x=3 and z=4, find y when x=6 and z=8.

240

120

480

60