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March 24, 2017

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1. The area of a square varies directly as the square of its side. If the side is halved, what would be the effect on its area?

2. If y varies directly as the square of x, what will happen to y when x is tripled?

  • Math-Algebra - ,

    a = ks^2
    new area: k(s/2)^2 = ks^2/4 = a/4

    y=kx^2
    k(3x)^2 = 9kx^2 = 9y

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