Question

Y is inversely proportional to x.
When x=9, y = 8.
Find y when x= 6.

Answer 1

y = 12 when x = 6

Explanation:

The equation for inverse proportion is

xy = k where k is a constant

Let x = 9 and y = 8

9*8 = k

72 = k

The equation is xy = 72

Let x=6

6*y = 72

Divide each side by 6

6y/6 = 72/6

y =12