0
Anonymous
f(x)= (4 - 5y)/8
f(y)= (4 - 8x)/5
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2x-5y+15=0 -5y=-2x-15 y=(2/5)x+3
69
(6, -4)
5y-2y= 3y+2 5y-2y-3y= 2 0y= 2
(5, 1)