PSAT Math - Direct and Inverse Variation

1

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?

2

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?

3

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

4

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

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

The square of varies inversely with the cube of . If when , then what is the value of when ?

8

The square of varies inversely with the cube of . If when , then what is the value of when ?

9

varies directly as both and the cube of . Which statement is true of concerning its relationship to ?

10

varies directly as and inversely as ; $A = 6s^{2}$ and $V= s^{3}$ . Assuming that no other variables affect , which statement is true of concerning its relationship to ?

Direct and Inverse Variation

Practice Questions