Direct & Inverse

Direct & Inverse

9th Grade

15 Qs

quiz-placeholder

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Direct & Inverse

Direct & Inverse

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

Created by

Anthony Clark

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The width of a rectangle varies inversely with its length.  If the width is 6 when the length is 24, give an equation that shows the relationship.

y = 4x

y = 144x

y = 4/x

y = 144/x

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Y is directly proportional to the square of z and inversely proportional to w.

y=kz2/w

y=kz/w

y=w/kz2

y=w/kz

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

y varies directly with the square of x.  If y=40 when x=4, find y when x = 7

17.5

70

122.5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

a varies inversely as the square of b. If a is 1 when b is 3, find a when b is 5. 

0.36

9

25

36

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

y varies directly as the square of x and indirectly with z. If y is 8 when x is 4 and z is 6, find y when x is 8 and z is 4.

3

12

48

64

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

y varies directly as x, if y=12 when x=5, find y when x=3

36/5

15/12

12/5

12/15

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

y varies inversely as x, if y = -3 when x = -6, find y when x = 14.

11

-11

9/7

7/9

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