How do you find the inverse of each function $y=x^2-12$ ?

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Answer 1 · 2018-05-11T23:20:58

$y=sqrt(x +12)$

Swap the $x$ and $y$ so $y=x^2-12$ becomes $x=y^2-12$
Then rearrange so $y$ is the subject.

$x+12=y^2$

So $y=sqrt(x +12)$

How do you find the inverse of each function y=x^2-12y=x^2-12?