Question

Which expression represents the inverse of the function f(x)=4x

Answer 1

`f^(-1)`(x) =
`(x)/(4\\)`

Explanation:

Let y = f(x) and rearrange making x the subject

y = 4x ( divide both sides by 4 )

x =
`(y)/(4)`

Change y back into terms of x

`f^(-1)` (x) =
`(x)/(4\\)`