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


Status: Waiting for your answers.


Given:Points A(9, -6), B(18, -3), C(-8, 9), D(-6, 12)
  
Slope Formula
  
Problem:Calculate the slopes of line AB and line CD to determine if they are parallel, perpendicular, or neither.
mAB =  
mCD =  
 
Characteristic: