SOLUTION: -x-y=8 2x-y=-1
Coordinate Systems and Linear Equations
-> SOLUTION: -x-y=8 2x-y=-1
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Y=-X-8 (red line).
Y=2X+1 (green line).
(graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions -x -8 and 2x +1).