Question 181194This question is from textbook College Algebra the Graphing Approach
: Determine whether the lines L1 and L2 passing through the pairs of points are parallel, perpendicular or neither.
#56
L1 (4,8), (-4,2)
L2 (3,-5), (-1, 1/3)
This question is from textbook College Algebra the Graphing Approach
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Determine whether the lines L1 and L2 passing through the pairs of points are parallel, perpendicular or neither.
#56
L1 (4,8), (-4,2)
slope = (8-2)(4--4) = 6/8 = 3/4
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L2 (3,-5), (-1, 1/3)
slope = (-5-(1/3)/(3--1) = (-16/3)/(4) = -4/3
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Since (3/4)(-4/3) = -1, the lines are perpendicular.
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Cheers,
Stan H.
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