algebra

Solve the system by graphing.

x+y=4
-x+y=2

How do I graph this?

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  1. solve each for y to make it easy:
    y = -x +4
    y = x + 2
    Now put two points for each line on your graph paper and draw the lines. Note where they cross each other, in this case at right angles at (1,3)

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