Y varies directly as the square of x. When x = 1, y = 3. What is the value of y when x = 3?

asked Mar 10, 2016 64.4k views

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by Yms

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If x=1, then x^2=1, and since x^2 and y are in direct proportion, y/x^2 is always equal to 3/1=3.

If x is 3, x^2 is 9, so y is thus 9*3=27.

Husman answered Mar 14, 2016

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