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algebra

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How many solutions do the linear equations x-y=2 -2x+2y=-1 have?

  • algebra -

    x - y = 2. m = -A/B = -1/-1 = 1.

    -2x + 2y = -1. m = 2/2 = 1.

    The lines have equal slopes. Therefore,
    they are parallel and do not intersect.
    So there are no solutions.

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