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March 27, 2017

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find the slope, if it exists, for the line containing the pair of points
(-15.2,5.6) and (-13.2, 4.5)

slope m= ?

  • Algebra1 - ,

    The long way of doing this is as follows:
    y = mx + b
    5.6 = -15.2m + b
    4.5 = -13.2m + b
    ===================
    Two equations, two unknowns. Subtract equation 2 from #1 and solve for m.
    I get -0.55 but check my work.

    The short way is
    (y1-y2)/(x2-x2) = ??

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