Question

Given y varies inversely as x, and y = 5 when x = 9. *Write the inverse function

Answer 1

y = k/x

k = 45

y = 45/x

Explanation:

y varies inversely as x

y = k/x

y = 5 when x = 9

y = k/x

5 = k / 9

Cross product

5 * 9 = k

k = 45

Constant of proportionality, k = 45

y = 45/x