SOLUTION: For the following problem, y varies directly as the square of x. If y = 50 when x = 5, find y when x is 9.

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Question 1056245: For the following problem, y varies directly as the square of x.
If y = 50 when x = 5, find y when x is 9.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
y=kx^2
50=k^25, , so k=2
y=2x^2, and when x=9, x^2=81, and y=162.