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March 30, 2017

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find the value of r so that the line that passes through each pair of points has the given slope
(r,4), (7,1), m=

  • Algebra - ,

    You didn't state the slope.

    what ever it is ...

    (4-1)/(r-7) = m
    m(r-7) = 3
    mr - 7m = 3
    mr = 3 + 7m
    r = (3+7m)/m
    so whatever m is, just plug it into that expression.

    or

    suppose the given m = 3/4

    then (4-1)/(r-7) = 3/4
    3r - 21 = 12
    3r = 33
    r = 11

    Use the above method with your given slope, should be easy.

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