SOLUTION: determine which two equations 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 i am completely confused

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Question 121922: determine which two equations 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
i am completely confused

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Perpendicular lines have slopes that are negative reciprocals of each other.
In other words,

The product of the slopes is -1.
All of your equations are in slope-intercept form.

and




From your 4 choices, the answer is B and C since

Graphing the equations, you see they are perpendicular.

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