Question

Find the inverse of the function f(x)=x-7

Answer 1

Answer:

$f^{-1}$(x) = x + 7

Step-by-step explanation:

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

y = x - 7 ( add 7 to both sides )

y + 7 = x

change y back into terms of x, then

$f^{-1}$(x) = x + 7