y-1=-7/9x

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Solution for y-1=-7/9x equation: 


x in (-oo:+oo)

y-1 = (-7/9)*x // - (-7/9)*x

y-((-7/9)*x)-1 = 0

(7/9)*x+y-1 = 0

7/9*x+y-1 = 0 // - y-1

7/9*x = -(y-1) // : 7/9

x = (-(y-1))/7/9

x = 9/7*(1-y)

x = 9/7*(1-y)

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