Y=7x/2x-9

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Solution for Y=7x/2x-9 equation: 


x in (-oo:+oo)

Y = ((7*x)/2)*x-9 // - ((7*x)/2)*x-9

Y-(((7*x)/2)*x)+9 = 0

Y+(-7/2)*x^2+9 = 0

-7/2*x^2 = -(Y+9) // : -7/2

x^2 = 2/7*(Y+9)

x^2 = 2/7*(Y+9) // ^ 1/2

abs(x) = (2/7)^(1/2)*(Y+9)^(1/2)

x = (2/7)^(1/2)*(Y+9)^(1/2) or x = -((2/7)^(1/2)*(Y+9)^(1/2))

x in { (2/7)^(1/2)*(Y+9)^(1/2), -((2/7)^(1/2)*(Y+9)^(1/2)) }

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