Asked by Anonymous

Write an equation for the quadratic function using the given information.

X=15, X=5
a point on the graph: (0,75)
Answered by Steve
If you mean the x-intercepts are at 5 and 15, then

y = a(x-5)(x-15)
75 = a(-5)(-15)
a = 1

so,

y = (x-5)(x-15)
Answered by Molly
x squared x^2-20x+75
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