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

Jan 9, 2016

${f}^{-} 1 \left(x\right) = x + 12$

#### Explanation:

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

ie. x - 12 = y

$\Rightarrow x = y + 12$

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

$\Rightarrow {f}^{-} 1 \left(x\right) = x + 12$