Direct and Inverse Variation

Practice Questions

SAT Math › Direct and Inverse Variation

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1

The temperature at the surface of the ocean is . At meters below the surface, the ocean temperature is . By how much does the temperature decrease for every meters below the ocean's surface?

2

The temperature at the surface of the ocean is . At meters below the surface, the ocean temperature is . By how much does the temperature decrease for every meters below the ocean's surface?

3

In a growth period, a population of flies triples every week. If the original population had 3 flies, how big is the population after 4 weeks?

4

In a growth period, a population of flies triples every week. If the original population had 3 flies, how big is the population after 4 weeks?

5

The value of varies directly with the square of __and the cube of . If when and , then what is the value of _ when and ?

6

Phillip can paint square feet of wall per minute. What area of the wall can he paint in 2.5 hours?

7

is the radius of the base of a cone; is its height; is its volume.

; .

Which of the following is a true statement?

8

and are the radius and volume, respectively, of a given sphere.

.

Which of the following is a true statement?

9

is the radius of the base of a cone; is its height; is its volume.

; .

Which of the following is a true statement?

10

The value of varies directly with the square of __and the cube of . If when and , then what is the value of _ when and ?

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