SOLUTION: Determine which two equations represent perpendicular lines. (a) y = 6x – 6 (b) y = 1/6 x + 6 (c) y = –1/6 x + 6 (d) y =1/6 x – 6

Algebra ->  Coordinate-system -> SOLUTION: Determine which two equations represent perpendicular lines. (a) y = 6x – 6 (b) y = 1/6 x + 6 (c) y = –1/6 x + 6 (d) y =1/6 x – 6       Log On


   

Question 114075: Determine which two equations represent perpendicular lines.
(a) y = 6x – 6 (b) y = 1/6 x + 6
(c) y = –1/6 x + 6
(d) y =1/6 x – 6

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Notice if we multiply the slopes of 6 (from equation A) and -1%2F6 (from C), we get 6%28-1%2F6%29=-6%2F6=-1. Since their product is -1, this means equations A and C are perpendicular