Skip to Content

## Mathematics

# Introducing new Paper mode

Back

Build your own quiz

Browse from millions of quizzes

QUIZ

8th

grade

58%

accuracy

151

plays

Nadira Herenda

4 years

No student devices needed. Know more

15 questions

Show Answers

See Preview

- 1. Multiple Choice3 minutes1 pt
Y varies directly as x. If y = 12 when x = 15, what is y when x = 20?

4/5

17

16

25

- 2. Multiple Choice3 minutes1 pt
n varies directly with c. If c = 24 when n = 18, what is c when n = 22?

88/3

28

66/4

24

- 3. Multiple Choice3 minutes1 pt
Which equation exhibits a direct proportion?

y = 5x - 2

y = 3/4 x

y - x = 4

x = 6

- 4. Multiple Choice3 minutes1 pt
Upon seeing, "y varies directly as x" we immediately.....

write down what x and y are

write down what k is equal to

substitute into the equation

write y = kx

- 5. Multiple Choice3 minutes1 pt
Y varies directly as x. If y = 39 when x = 52, what is the best answer for k?

k = 52

k = 4/3

k = 3/4

k = 39/52

- 6. Multiple Choice3 minutes1 pt
If x = 9 when y = 30, and x = 27 when y = 90, does y vary directly with x? If so, what is k equal to

Yes, k = 10/3

no

Yes, k = 3/1

Yes, k = 9

- 7. Multiple Choice3 minutes1 pt
10

2.5

2

20

- 8. Multiple Choice3 minutes1 pt
42

7

3

38

- 9. Multiple Choice3 minutes1 pt
256

4

64

128

- 10. Multiple Choice3 minutes1 pt
35

5

45

49

- 11. Multiple Choice3 minutes1 pt
20

4

5

24

- 12. Multiple Choice3 minutes1 pt
147

3

63

441

- 13. Multiple Choice3 minutes1 pt
125

5

25

100

- 14. Multiple Choice3 minutes1 pt
40

4

400

80

- 15. Multiple Choice3 minutes1 pt
48

3

144

100

- Answer choicesTagsAnswer choicesTags
Explore all questions with a free account

Already have an account?