7. Parallel Perpendicular Lines

These are pretty easy concepts but you should know the basics of how to identify equations that are parallel and perpendicular. Not a a huge part of the exam but should be easy to learn if you've figured out equations and graphing.

Parallel Lines

Provides a good explanation of parallel lines with equations as well as graphs. Also allows for you to create your own functions so you can play with the concept of parallel lines.

Perpendicular Lines

Same website as above but explains perpendicular lines again providing formulas and graphs.

Tutorial and Practice Problems

Great tutorial on parallel and perpendicular lines. Goes into quite some details with equations and also some graphs.

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