X : Y = 2 : 7
7X = 2Y
Y = 3.5X
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1) XY = 14
X * 3.5X = 14
3..5X^2 = 14
X^2 = 4
X = + 2 ---> Y = 3.5 * 2 = 7
X = - 2 ---> Y = - 7
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2) XY = 56
3.5X^2 = 56
X^2 = 16
X = + 4 ----> Y = 14
X = - 4 ----> Y = - 14
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3) XY = 224
3.5X^2 = 224
X ^2 = 64
X = 8 ----> Y = 28
X = - 8 ---> Y = - 28
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4) XY = 18144
3.5X^2 = 18144
X^2 = 5184
X = 72 ---> Y = 252
X = - 72 ---> Y = - 252
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