Question

What is the inverse of the function

Answer 1

second option

Explanation:

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

y = x - 9 ( add 9 to both sides

y + 9 = x

Change y back into terms of x with x =
`f^(-1)` (x) , then

`f^(-1)` (x) = x + 9