SOLUTION: The axis of symmetry for the quadratic equation y = x2 + 4 lies on which axis?

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Question 297682: The axis of symmetry for the quadratic equation y = x2 + 4 lies on which axis?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
y+=+x%5E2+%2B+4
or in vertex form
y=%28x-0%29%5E2%2B4
The vertex lies on the axis of symmetry or x=0 which would be the y-axis.
+graph%28+300%2C300%2C+-5%2C+5%2C+-5%2C+15%2C++x%5E2%2B4%29+