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9 August, 11:51

Use an equation to find the value of k so that the line that passes through (-4, k) (-4, k) and (6, - 7) has a slope of m = - 1/5.

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Answers (2)
  1. 9 August, 13:05
    0
    The value of k is - 5.

    Step-by-step explanation:

    To find the value of k, start by using the known information we have in the equation for slope. The equation is below.

    m (slope) = (y2 - y1) / (x2 - x1)

    In this equation, the first ordered pair would be (x1, y1) and the second would be (x2, y2). So we put the values in for these variables and we get.

    -1/5 = (-7 - k) / (6 + 4)

    -1/5 = (-7 - k) / 10

    Now we can use cross multiplication to solve for k.

    -1/5 = (-7 - k) / 10

    -1*10 = 5 (-7 - k)

    -10 = - 35 - 5k

    25 = - 5k

    -5 = k
  2. 9 August, 14:51
    0
    k=-5

    Step-by-step explanation:

    To find the value of k, start by using the known information we have in the equation for slope. The equation is below.

    m (slope) = (y2 - y1) / (x2 - x1)

    In this equation, the first ordered pair would be (x1, y1) and the second would be (x2, y2). So we put the values in for these variables and we get.

    -1/5 = (-7 - k) / (6 + 4)

    -1/5 = (-7 - k) / 10

    -1/5 = (-7 - k) / 10

    -1*10 = 5 (-7 - k)

    -10 = - 35 - 5k

    25 = - 5k

    -5 = k
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