math [linear equations]

graph the following equation


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  1. If you can plot points, remember that two points determine a line. So, pick two easy points and plot them. Then draw a line through them.

    So, what's easy? How about letting x=0 or y=0? That gives us

    y = -5


    So, our two points are
    (0,-5) and (5,0)

    Now it should be clear. You can always pick other points if you want, but they won't really give you any more information.

    If you want x=3, then 3-y=5 and y = -2 so the point (3,-2) is on the line too.

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    posted by Steve

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