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# Comparing Equations of Parallel and Perpendicular Lines

## Use slope to identify parallel and perpendicular lines

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.

## Comparing Equations of Parallel and Perpendicular Lines

Use their slopes to determine if two lines are parallel or perpendicular.

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## Comparing Equations of Parallel and Perpendicular Lines

Use their slopes to determine if two lines are parallel or perpendicular.

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## Comparing Equations of Parallel and Perpendicular Lines

Use their slopes to determine if two lines are parallel or perpendicular.

0

## Comparing Equations of Parallel and Perpendicular Lines (4.1)

Use their slopes to determine if two lines are parallel or perpendicular.

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## Parallel and Perpendicular Lines

Use their slopes to determine if two lines are parallel or perpendicular.

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## Comparing Equations of Parallel and Perpendicular Lines

Use their slopes to determine if two lines are parallel or perpendicular.

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## Parallel and Perpendicular Lines

by EPISD Algebra 1 Team //at grade

Use their slopes to determine if two lines are parallel or perpendicular.

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## Parallel and Perpendicular Lines

by SFDR Algebra I //at grade

Use their slopes to determine if two lines are parallel or perpendicular.

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