SOLUTION: 2. Line l1 goes through (-1, -2) and (2, 2). What is the slope of any line perpendicular to l1?

Algebra ->  Graphs -> SOLUTION: 2. Line l1 goes through (-1, -2) and (2, 2). What is the slope of any line perpendicular to l1?       Log On


   

Question 206140: 2. Line l1 goes through (-1, -2) and (2, 2). What is the slope of any line perpendicular to l1?

Answer by Marth(57) About Me  (Show Source):
You can put this solution on YOUR website!
Find the slope of line l1 first.
The slope can be found by %28y1-y2%29%2F%28x1-x2%29


You are given the points (-1, -2) and (2, 2)
m=%28-2-2%29%2F%28-1-2%29
m=%28-4%29%2F%28-3%29
m=4%2F3


The perpendicular slope can always be found by -1%2Fm.
-1%2F%284%2F3%29 = -3%2F4