Slopes of Parallel and Perpendicular Lines

After reviewing the slopes of vertical and horizontal lines, we talked about the slopes of parallel lines. Lines that are parallel have identical slopes but different y intercepts. Perpendicular lines have slopes that are negative reciprocals of each other. Perpendicular lines also can have the same or different y intercept.

Tonight's Homework: Complete both sides of the yellow worksheet, and the front page of the practice test. Remember, there will be a test over this material on Thursday, February 7. Start preparing now.