1. y=-2x+1, 2.y=x-2, 3.y=1/2x-4, 4.y=3/2x-1, 5.y=3x-5, 6.y=-x+5, 7.y=-3/4x-3. y=-x-1, 1.y=x+4, 2. y=2/3x+2, 3. y=-7/5x+7, (1)2,.3, (2)-8, (3)a=4,b=-2
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