Question

Help me plsss, vry simple!

Answer 1

`f^(-1)` (x) = 3x

Explanation:

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

y =
`(x)/(3)` ( multiply both sides by 3 to clear the fraction )

3y = x

change y back into terms of x with x the inverse function, that is

`f^(-1)` (x) = 3x