Parallel, Perpendicular, or Neither
View the Lesson | MATHguide homepage Updated March 24th, 2018

Status: Waiting for your answers.

Given:Points A(-12, 11), B(-10, 18), C(-6, 9), D(1, 7)
Slope Formula
Problem:Calculate the slopes of line AB and line CD to determine if they are parallel, perpendicular, or neither.
mAB =  
mCD =