SOLUTION: Hello - please solve this non-function and explain why it is not a function: solve y2 + 4x = 8 thanks!

Algebra ->  Graphs -> SOLUTION: Hello - please solve this non-function and explain why it is not a function: solve y2 + 4x = 8 thanks!      Log On


   

Question 461217: Hello - please solve this non-function and explain why it is not a function:
solve y2 + 4x = 8
thanks!
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
please solve this non-function and explain why it is not a function:
solve y2 + 4x = 8
-----
y^2 = -4x+8
---
y = +/-sqrt[-4x+8]
---
For every x-value there are 2 y-values.
That is why it is not a function.
===========
Cheers,
Stan H.
===========