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March 27, 2017

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I'm having trouble with these two questions about slopes and equation of a line:

(A)-Find the slope of each segment
(B)-Write an equation of the line that is determined by each pair of points

1. (0,0) and (6,-4)
2. (-3,2) and (7,-4)

Thank you!

  • Math-Geometry - ,

    I will do the second one.

    If you are using the y = mx + b form of the equation ....

    find slope:
    m = (-4-2)/(7-(-3)) = -3/5

    then y = (-3/5)x + b
    sub in (-3,2)
    2 = (-3/5)(-3) + b
    2 = 9/5 + b
    2 - 9/5 = b
    b = 1/5

    then y = (-3/5)x + 1/5

    do #1 the same way.

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