Question

What is the inverse of the function

Answer 1

Answer:

second option

Step-by-step 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