SOLUTION: Determine which two equations represent perpendicular lines. (a) y = 5/3x – 3 (b) y = 3x – 5/3 (c) y = -1/3x + 5/3 (d) y = 1/3x

Algebra ->  Equations -> SOLUTION: Determine which two equations represent perpendicular lines. (a) y = 5/3x – 3 (b) y = 3x – 5/3 (c) y = -1/3x + 5/3 (d) y = 1/3x       Log On


   

Question 45984: Determine which two equations represent perpendicular lines.
(a) y = 5/3x – 3
(b) y = 3x – 5/3
(c) y = -1/3x + 5/3
(d) y = 1/3x

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Remember that the slopes of perpendicular lines are the negative reciprocal of each other.
Since all of the possible answers are in the slope-intercept form y = mx+b, you can compare the slopes of the answers to find two slopes that are negative reciprocals.
b) 3x-5%2F3 The slope is 3
c) %28-1%2F3%29x%2B5%2F3 The slope is -1%2F3, the negative reciprocal of 3