Asked by rmz
determine wether the following lines are parallel, perpendicular or neither.
y=20x+45 and y=-1/20x+81
they are perpendicular right?
y=20x+45 and y=-1/20x+81
they are perpendicular right?
Answers
Answered by
Damon
m = slope = 20
m' = slope = -1/20
if m' = -1/m they are perpendicular all right
m' = slope = -1/20
if m' = -1/m they are perpendicular all right
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