SOLUTION: Given the vertex of a parabola of (4, –8) that passes through the point (2, 20), what is the vertex form of the quadratic equation?
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Question 1107908: Given the vertex of a parabola of (4, –8) that passes through the point (2, 20), what is the vertex form of the quadratic equation? Found 2 solutions by josgarithmetic, TeachMath:Answer by josgarithmetic(39617) (Show Source):
You can put this solution on YOUR website! y=a(x-4)^2-8, if this parabola has vertical symmetry axis
or
x=a(x-4)+8, if parabola has horizontal symmetry axis
Solve the equation for a, and substitute the x & y coordinates of the point, and evaluate your factor a.