Geometry

Use the slope of AB to determine which line below, if any, is parallel to AB.
A(1,8) B6,-4)

a. y = 5/12x + 5
b. y = -5/12x + 5
c. y = 12/5x + 5
d. none

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1. (1,8) and (6,-4) ?
m = (-4-8)/(6-1) = -12/5
so none

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