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# Equations of Perpendicular Lines

## Lines meeting at right angles have slopes that are negative reciprocals

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Equations of Perpendicular Lines

by CK-12 //basic
Learn how to recognize and write equations of perpendicular lines.
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## Writing Equations of Perpendicular Lines - Overview

by CK-12 //basic
Overview
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## Equations of Parallel and Perpendicular Lines

by CK-12 //basic
Shows how to find the equations of parallel and perpendicular lines.
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## Writing Slope-Intercept Form for Perpendicular Lines - Overview

by CK-12 //basic
Overview
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## Writing Equations of Perpendicular Lines - Example 1

by CK-12 //basic
Writing Equations of Perpendicular Lines Given a Line and One Point
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## Writing Slope-Intercept Form for Perpendicular Lines - Example 1

by CK-12 //basic
Writing Slope-Intercept Form Given the Perpendicular Line and a Point
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