[tex]\huge\boxed{x=\sqrt{y-7}}[/tex]
We are trying to isolate [tex]x[/tex]. Subtract [tex]7[/tex] from both sides. [tex]y-7=x^2[/tex]
Find the square root of both sides. [tex]\boxed{\sqrt{y-7}}=x[/tex]
Note: I've attached a graph of [tex]y=x^2 +7[/tex].
