SOLUTION: Please help! I have to write this equation in vertex form. The vertex of the parabola is the origin. Point W (4,-5) lies on the graph of the parabola.

Algebra ->  Rational-functions -> SOLUTION: Please help! I have to write this equation in vertex form. The vertex of the parabola is the origin. Point W (4,-5) lies on the graph of the parabola.      Log On


   

Question 522403: Please help!
I have to write this equation in vertex form.
The vertex of the parabola is the origin. Point W (4,-5) lies on the graph of the parabola.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I have to write this equation in vertex form.
The vertex of the parabola is the origin. Point W (4,-5) lies on the graph of the parabola.
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Form: y = a(x-h)^2+k
h=0 and k=0
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y = ax^2
solve for "a":
-5 = a*4^2
a = -5/16
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Equation:
y = (-5/16)x^2
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Cheers,
Stan H.
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