Parallel and Perpendicular Lines

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CCSS.8.EE.B.6

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The lines are Parallel.

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What is the slope of a line parallel to the line represented by the equation y = 2x - 7?

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The slope of the parallel line is 2.

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CCSS.8.EE.B.5

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CCSS.8.EE.B.6

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What do we call the slopes of perpendicular lines?

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The slopes of perpendicular lines are called opposite reciprocals.

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CCSS.HSG.CO.A.1

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Define parallel lines in terms of their slopes.

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Parallel lines have identical slopes.

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CCSS.8.EE.B.6

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What is the relationship between the slopes of two lines that are parallel?

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The slopes of parallel lines are equal.

Tags

CCSS.8.EE.B.6

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If a line has a slope of 4, what is the slope of a line that is perpendicular to it?

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Tags

CCSS.8.EE.B.6

Front

Back

Tags

CCSS.8.EE.B.6

Front

If two lines have slopes of 5 and -rac{1}{5}, what is their relationship?

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The lines are Perpendicular.