Question

Suppose y varies inversely with x, and y = 6 when x = 3. Find x when y = 12.

Answer 1

1.5

Explanation:

`y \: \alpha \: (1)/(x)`

y = k ÷ x

yx = k

y = 6 , x = 3

6 • 3 = k

18 = k

when y = 12 , x = ?

yx = k

12x = 18

x = 18÷12

x = 3/2

x = 1.5