Parallel & Perpendicular Lines

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet. They have the same slope but different y-intercepts.

Tags

CCSS.HSG.CO.A.1

Front

What is the definition of perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees). The slopes of perpendicular lines are opposite reciprocals.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

If the slope of a line is 2, what is the slope of a line that is perpendicular to it?

Back

Tags

CCSS.8.EE.B.6

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Back

Front

Back

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CCSS.8.EE.B.5

Front

Back

The lines are parallel because they have the same slope of 3.

Front

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

Back

The slopes of two parallel lines are equal.

Tags

CCSS.8.EE.B.6

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Back

Front

Back

The lines are perpendicular because the slopes are opposite reciprocals.

Tags

CCSS.8.EE.B.6

Front

What is the slope-intercept form of a line?

Back

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3