SOLUTION: A line passes through (-3, 9) and (4, 4). Another line passes through (9, -1) and (4, -8). Are the lines parallel or perpendicular?

Algebra ->  Linear-equations -> SOLUTION: A line passes through (-3, 9) and (4, 4). Another line passes through (9, -1) and (4, -8). Are the lines parallel or perpendicular?      Log On


   

Question 1169813: A line passes through (-3, 9) and (4, 4). Another line passes through (9, -1) and (4, -8). Are the lines parallel or perpendicular?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You have two sets of points.
USE FORMULA FOR SLOPE OF A LINE.

YOU DO THIS!