SOLUTION: If the x intercepts of a parabola are 5 and -3, what is the axis of symmetry?

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Question 876172: If the x intercepts of a parabola are 5 and -3, what is the axis of symmetry?
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Q:
If the x intercepts of a parabola are 5 and -3, what is the axis of symmetry?
A:
The average of the x-intercepts is %285+%2B+%28-3%29%29%2F2 = -1.
So the equation of the axis of symmetry is highlight%28x+=+-1%29