SOLUTION: does x+8=y^2 define y as a function of x?

Algebra ->  Functions -> SOLUTION: does x+8=y^2 define y as a function of x?      Log On


   

Question 345442: does x+8=y^2 define y as a function of x?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
No, there are two values of y for each value of x, violating the requirements for a function.
As an example, x=8,
8%2B8=y%5E2
y%5E2=16
y=4 and y=-4.