Parallel And Perpendicular Lines

Apply what you've discovered about equations of lines to two very special types of lines: parallel and perpendicular. Le... (more)

Apply what you've discovered about equations of lines to two very special types of lines: parallel and perpendicular. Learn how to tell if lines are parallel or perpendicular from their equations alone, without having to see the lines themselves. Also try your hand at word problems that feature both types of lines. (less)