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Write the equation of a line that contains the point (7, 9) and is parallel to a line that contains the points (-4, 5) and (8, -1). 

 Jul 25, 2020
 #1
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find the slope between the tw given points     (y1-y2) / (x1-x2)   =   6/(-12)    = m

  parallel is the same slope

    y = mx +b

    y = -1/2 x + b     sub in the  point to be on the new line

    9 = -1/2(7) + b     b = 12.5

y = - 1/2x + 12.5 

 Jul 25, 2020

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