SOLUTION: Suppose z varies directly with x and inversely with the square of y. When x=5 and Y= 9,z= 900. Find the equation of variation.

Question 325306: Suppose z varies directly with x and inversely with the square of y. When x=5 and Y= 9,z= 900. Find the equation of variation.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose z varies directly with x and inversely with the square of y.
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z = kx/y^2
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Find "k": using the following information.
When x=5 and Y= 9,z= 900.
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900 = k*5/9^2
k= 900*81/5 = 14580
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Find the equation of variation.
Equation:
y = 14580x/y^2
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Cheers,
Stan H.
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