Algebra 2

P (-1, 2)
Q (k, -4)
m= -1/2

determine k so that the line through the given points will have slope m.


how do you do this?

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asked by Natasha
  1. Formula of a slope is (y2-y1)/(x2-x1)

    K is your variable for x2

    Substitute:

    2- -4 (or 2+4) divided by -1-k

    Set the equation and solve for "k":

    6/(-1-k) = -1/2

    6 = (1+k)/2
    12 = 1+k
    k = 11

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    posted by Angela
  2. x1*

    Excuse me. k is your variable for x1 the way I set it up.

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    posted by Angela

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