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4x+2y = 20 2y = -4x+20 y = -2x+10
8x+2y=4x=-y/4+0.5y=-4x+2
-2
4x + 2y = 6 (first equation x 2) 4x + 2y = 6 (second equation rearranged) No unique answer exists
4x+2y = 6 2y = -4x+6 y = -2x+3 Slope = -2