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28 August, 21:05

Determine if the equations are parallel, perpendicular, or neither

x + y = 8 and y = - x - 1

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Answers (1)
  1. 28 August, 21:56
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    Because we have a value of y we can plug it into the original equation.

    x + (-x - 1) = 8

    x - x - 1 = 8

    Combine like terms.

    -1 = 8

    Add 1 to both sides.

    0 ≠ 9

    The equations are parallel because they do not have a common solution.
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