Is x=y^2-3 a function ?

1 Answer
Apr 11, 2018

It's not a function : see the explanation below.

Explanation:

x=y^2-3
x+3=y²
y=sqrt(x+3), or y=-sqrt(x+3)
So no, it's not a function ( actually it can be two functions ! )
\0/ here's our answer !