SOLUTION: x=sqrt(4-y^2) ---I have to get "y" by itself?

Algebra ->  Functions -> SOLUTION: x=sqrt(4-y^2) ---I have to get "y" by itself?      Log On


   

Question 104328: x=sqrt(4-y^2) ---I have to get "y" by itself?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
x=sqrt(4-y^2)
Square both sides to get:
x^2 = 4-y^2
Rearrange:
y^2 = 4-x^2
Take the square root:
y = sqrt(4-x^2)
=====================
Cheers,
Stan H.