y-9=4/5x

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Solution for y-9=4/5x equation: 


x in (-oo:+oo)

y-9 = (4/5)*x // - (4/5)*x

y-((4/5)*x)-9 = 0

(-4/5)*x+y-9 = 0

y-4/5*x-9 = 0 // - y-9

-4/5*x = -(y-9) // : -4/5

x = (-(y-9))/(-4/5)

x = -5/4*(9-y)

x = -5/4*(9-y)

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