Parallel and Perpendicular Lines

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet or intersect. They have the same slope.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What are perpendicular lines?

Back

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

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What is the slope of a line in slope-intercept form?

Back

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CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

How do you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

How do you determine if two lines are perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Tags

CCSS.8.EE.B.6

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Back

The slope of the line is 3.

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CCSS.8.EE.B.5

Front

Back

The slope of the line is -rac{1}{2}.

Tags

CCSS.8.EE.B.5

Front

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

Back

The slope of a line perpendicular to line A is -rac{1}{2}.

Tags

CCSS.8.EE.B.6

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Back

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