3.8. Parallel Lines in the Coordinate Plane http://www.ck12.org
3.8 Parallel Lines in the Coordinate Plane
Here you’ll learn properties of parallel lines in the coordinate plane, and how slope can help you to determine
whether or not two lines are parallel.
What if you wanted to figure out if two lines in a shape were truly parallel? How could you do this? After completing
this Concept, you’ll be able to use slope to help you to determine whether or not lines are parallel.
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URL: http://www.ck12.org/flx/render/embeddedobject/52438
CK-12 Foundation: Chapter3ParallelLinesintheCoordinatePlaneA
Watch the portion of this video that deals with Parallel Lines
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URL: http://www.ck12.org/flx/render/embeddedobject/86
Khan Academy: Equations of Parallel and Perpendicular Lines
Guidance
Recall that parallel lines are two lines that never intersect. In the coordinate plane, that would look like this: