SOLUTION: Does this parabola open up, down, left or right? {{{x=-2y^2}}}

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Question 19555: Does this parabola open up, down, left or right?
x=-2y%5E2
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
First, get the equation in terms of y:
x+=+-2y%5E2 Divide both sides by -2.
x%2F-2+=+y%5E2 Now take the square root of both sides.
y+=+%2Bsqrt%28x%2F-2%29, y+=+-sqrt%28x%2F-2%29
Take a look at the graph:
graph%28300%2C200%2C-5%2C5%2C-3%2C3%2Csqrt%28x%2F-2%29%2C-sqrt%28x%2F-2%29%29