Question 1016927
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x-y=1 . (red line on graph)
x=y+1
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x+2y=7 . (green line on graph)
(y+1)+2y=7
3y=6
y=2
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x=y+1=2+1=3
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SOLUTION: (3,2)
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GRAPH:
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{{{ graph( 800, 800, -10, 10, -10, 10, x-1, (7-x)/2) }}} 
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Graphic Solution: Lines intersect at (3,2)
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