SOLUTION: 16. Determine which two equations represent perpendicular lines. Hint: Remember what characteristic exist in equations representing lines that are perpendicular. (a) y = 8x –

Algebra ->  Coordinate-system -> SOLUTION: 16. Determine which two equations represent perpendicular lines. Hint: Remember what characteristic exist in equations representing lines that are perpendicular. (a) y = 8x –       Log On


   

Question 110377: 16. Determine which two equations represent perpendicular lines.
Hint: Remember what characteristic exist in equations representing lines that are perpendicular.
(a) y = 8x – 2
(b) y = x + 2
(c) y = – x + 2
(d) y = x – 2


Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Notice if you multiply the slope of (b) and (c), you get

%281%29%28-1%29=-1

Since the product of the two slopes is -1, this means the two lines are perpendicular. The same applies to equations (c) and (d) (note: b and c are parallel)