Question 225042
Solve each system by graphing. 
x + y = 4
2x - y = 5 
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Plot 2 points for each eqn on graph paper, then draw a line thru the 2 points.
x +y = 4
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0 4
4 0
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2x - y = 5
x  y
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0  -5
5  +5
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Where the lines cross is the solution.