SOLUTION: If n varies directly as the square of m and n = 225 when m = 5, what is the value of n when m = -8?

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Question 637769: If n varies directly as the square of m and n = 225 when m = 5, what is the value of n when m = -8?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If n varies directly as the square of m:
n = k*m^2
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Solve for "k" using "n = 225 when m = 5":
225 = k*5^2
k = 9
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Equation:
n = 9*m^2
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What is the value of n when m = -8?
n = 9*(-8)^2
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n = 9*64
n = 576
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Cheers,
Stan H.
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