SOLUTION: determine which two equation represent perpendicular lines. a) y=4/7x-3 b) y=3x-4/7 c) y=-1/3x+4/7 d) y=1/3x-4/7

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Question 113852: determine which two equation represent perpendicular lines.
a) y=4/7x-3
b) y=3x-4/7
c) y=-1/3x+4/7
d) y=1/3x-4/7
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
b and c.
y=mx+b
In order to form perpendicular lines the slope(m) of one has to be the negative reciprocal of the other.
the negative reciprocal of 3 is -1/3 and vice versa.
Ed
graph%28500%2C500%2C-10%2C10%2C-10%2C10%2C3x-4%2F7%2C-x%2F3%2B4%2F7%29