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March 26, 2017

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If the line passing through the points (a, 1) and (5, 7) is parallel to the line passing through the points (8, 8) and (a + 2, 1), what is the value of a?

a =?

  • math - ,

    since the slopes are the same,

    6/(5-a) = -7/(a+2-8)
    6(a-6) = 7(a-5)
    6a-36 = 7a-35
    a = -1

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