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Mathematics 7 Online
OpenStudy (anonymous):

y varies directly as the square of x. When x = 5, y = 100. Find y when x = 6.

OpenStudy (anonymous):

The GENERAL equation for something that varies directly is: \[y = kx\] Here, it varies directly as a square, so: \[y = kx^2\] Plug in 5 for x. Then what do you have?

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