SOLUTION: Is (2, -3) a solution of x^2 + 2y = -2? Tell why or why not.

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Question 282204: Is (2, -3) a solution of x^2 + 2y = -2? Tell why or why not.
Found 2 solutions by Mathematicians, oberobic:
Answer by Mathematicians(84) About Me  (Show Source):
You can put this solution on YOUR website!
You have to plug in x and y given those two points and see if both sides come out right.
So we have x = 2 and y = -3
x%5E2+%2B+2y+=+-2
%282%29%5E2+%2B+2%28-3%29+=+-2
4+-+6+=+-2
+-2+=+-2 This is true, so (2,-3) is a solution

Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
Rearrange the equation into: y = whatever format
.
x%5E2+%2B+2y+=+-2
.
subtract x^2 from both sides
.
2y+=+-x%5E2+-2
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divide both sides by 2
.
y+=+-%28-1%2F2%29%2Ax%5E2+-1
.
So you want to know if (2,-3) is on the graph? Plug the value of 'x' into the equation and see.
.
y+=+-%28-1%2F2%29%2A2%5E2+-1
y+=+-%28-1%2F2%29%2A4+-1
y+=+-2+-1
y+=+-3
.
Yes, the point (2,-3) is on the graph.
.
Done