Question

The variables a and b vary directly. Use the given values for a and b to write an equation relating a and b

a=3; b=15

Answer 1

a = 1/5 b

Explanation:

Answer 2

a = 1/5 b

Explanation:

A direct variation is given by

a = k*b where k is the constant of variation

3 = k* 15

Divide each side by 15

3/15 = k*15/15

1/5 = k

a = 1/5 b