Question

How do you find the inverse of `y=x-12`?

Answer 1

`f^-1(x) =x + 12`

Explanation:

to find the inverse of this function change the subject to express x in terms of y.

ie. x - 12 = y

`rArr x = y + 12`

this allows you to find x when you know y. The inverse function is normally expressed using x.

`rArr f^-1(x) = x + 12`