# Parallel and Perpendicular Lines Investigation

This is applet is for investigating parallel and perpendicular lines.
[b]Parallel and Perpendicular Line Investigation[/b][br][br]1. Look at the three lines and their equations color coded [color=#c51414]red[/color], [color=#0a971e]green[/color] and [color=#1551b5]blue[/color].[br] Find the following:[br] [color=#c51414]Red Line[/color] m = ________ b = _________[br] [color=#1551b5]Blue Line[/color] m = ________ b = _________[br] [color=#0a971e]Green Line[/color] m = ________ b = ________[br][br] 2. Move Point B to [b](1, 4)[/b] and find the following:[br] [color=#c51414]Red Line[/color] m = ________ b = _________[br] [color=#1551b5]Blue Line[/color] m = ________ b = _________[br] [color=#0a971e]Green Line[/color] m = ________ b = ________[br][br]3. Move Point B to [b](3, 1)[/b] and find the following:[br][color=#c51414] Red Line[/color] m = ________ b = _________[br] [color=#1551b5]Blue Line[/color] m = ________ b = _________[br] [color=#0a971e]Green Line[/color] m = ________ b = ________[br][br]4. What do you notice about the [b]slopes (m)[/b] of the lines?[br] Slopes of parallel lines are ________________.[br] Slopes of perpendicular lines are _______________ and ________________.[br][br] 5. Move Point B to the [b]origin (0, 0)[/b] and write the equations for the:[br] [color=#c51414]Red Line[/color] [br] [color=#1551b5]Blue Line[/color] [br] [color=#0a971e]Green Line[/color][br][br]6. What conclusions can you make based on the equations from part 5?