Question

If g(x)=x+7, then g-1(x) =

Answer 1

`g^(-1)`(x) = x - 7

Explanation:

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

y = x + 7 ( subtract 7 from both sides )

y - 7 = x

Change y back into terms of x

`g^(-1)`(x) = x - 7