Y-9=-1/2(x-3)

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Solution for Y-9=-1/2(x-3) equation: 


x in (-oo:+oo)

Y-9 = (-1/2)*(x-3) // - (-1/2)*(x-3)

Y-((-1/2)*(x-3))-9 = 0

(1/2)*(x-3)+Y-9 = 0

1/2*(x-3)+Y-9 = 0

1/2*(x-3)+Y-9 = 0

Y+1/2*x-9-3/2 = 0

Y+1/2*x-21/2 = 0

Y+1/2*x-21/2 = 0

Y+1/2*x-21/2 = 0 // - Y-21/2

1/2*x = -(Y-21/2) // : 1/2

x = (-(Y-21/2))/1/2

x = 2*(21/2-Y)

x = 2*(21/2-Y)

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