SOLUTION: Suppose z varies directly with x and inversely with the square of y.If z=8 when x=4 and y=3 what is z when x=11 and y=9

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Question 1093058:
Suppose z varies directly with x
and inversely with the square of y.If z=8
when x=4 and y=3 what is z when x=11 and y=9

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
z=kx%2Fy%5E2 from the first part.

k=zy%5E2%2Fx
Use the second part to evaluate k.


Once k is found and known, then
z=k%2A11%2F%289%5E2%29