SOLUTION: Determine which two equations represent perpendicular lines y=3x-7, y=1/3x+7, y=-1/3x+7, y=1/3x-7

Algebra ->  Equations -> SOLUTION: Determine which two equations represent perpendicular lines y=3x-7, y=1/3x+7, y=-1/3x+7, y=1/3x-7      Log On


   

Question 81566: Determine which two equations represent perpendicular lines
y=3x-7, y=1/3x+7, y=-1/3x+7, y=1/3x-7
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
The slopes of perpendicular lines are the negative reciprocals of each other:
So, y=3x-7 and y=-1/3x+7 have slopes that are the negative reciprocals:
That is, 3 and -1/3