Use their slopes to determine if two lines are parallel or perpendicular.
This video demonstrates a sample use of identifying parallel and perpendicular lines.
This video provides an explanation of the concept of identifying parallel and perpendicular lines.
Practice Comparing Equations of Parallel and Perpendicular Lines questions
Sort out a jumble of key words into categories using the Card Sort strategy. This activity may help you to develop skills for remembering key words and concepts.
Drag around a pair of perpendicular lines to see how their slopes change.