Parallel & Perpendicular Lines

Front

Slopes of perpendicular lines are...

Back

negative reciprocals.

Tags

CCSS.8.EE.B.6

Front

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

Back

2

Tags

CCSS.8.EE.B.5

Front

Slopes of parallel lines are...

Back

the same.

Tags

CCSS.8.EE.B.5

Front

What is the slope of a line perpendicular to y = 2x - 7?

Back

-1/2

Tags

CCSS.8.EE.B.6

Front

What slope is perpendicular to m = 5/8?

Back

-8/5

Tags

CCSS.8.EE.B.6

Front

Definition of parallel lines in geometry.

Back

Lines that never intersect and have the same slope.

Tags

CCSS.HSG.CO.A.1

Front

Definition of perpendicular lines in geometry.

Back

Lines that intersect at a right angle (90 degrees).

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

If two lines have slopes m1 and m2, when are they parallel?

Back

When m1 = m2.

Tags

CCSS.8.EE.B.6

Front

If two lines have slopes m1 and m2, when are they perpendicular?

Back

When m1 * m2 = -1.

Tags

CCSS.8.EE.B.6

Front

Example of two parallel lines: y = 3x + 1 and y = 3x - 4.

Back

Both lines have the same slope of 3.

Tags

CCSS.8.EE.B.5