Question

Jake earns $7.50 per hour working at a local car wash. The function,

ƒ
ƒ
(
x
)
=
7.50
x
, relates the amount Jake earns to the number of hours he works. Write the inverse of this relation

Answer 1

f(x) = y

y = 7.50x

To find the inverse, swap x and y

x = 7.50y

Now solve for y

y = x/7.50

f-1(x) = x/7.50