Question 206447
what is the equation of a parabola graph? 
The parabola opens downward. The vertex is (0,2). It also has points (-2,-2) and (2,-2)
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Form: y = a(x-h)^2+k
Vertex: h = 0, k = 2
Ao,y = ax^2 +2
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Using (-2,-2) and (2,-2) you get
-2 = 4a +2
a = -1
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Equation:
y = -x^2+2
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Cheers,
Stan H.