Parallel and Perpendicular Slopes

Front

What is the definition of parallel lines in terms of slope?

Back

Parallel lines have the same slope and never intersect.

Tags

CCSS.8.EE.B.5

Front

What is the definition of perpendicular lines in terms of slope?

Back

Perpendicular lines have slopes that are negative reciprocals of each other.

Tags

CCSS.8.EE.B.6

Front

If two lines have slopes m1 and m2, what condition must be met for the lines to be parallel?

Back

m1 = m2.

Tags

CCSS.8.EE.B.6

Front

If two lines have slopes m1 and m2, what condition must be met for the lines to be perpendicular?

Back

m1 * m2 = -1.

Front

Find the slope of a line parallel to the line given by the equation y = 3x + 2.

Back

3.

Tags

CCSS.8.EE.B.5

Front

Find the slope of a line perpendicular to the line given by the equation y = -4x + 1.

Back

1/4.

Tags

CCSS.8.EE.B.6

Front

What is the slope of the line represented by the equation y = 5x - 3?

Back

5.

Tags

CCSS.8.EE.B.5

Front

If line A has a slope of 2 and line B has a slope of 2, what can be said about the two lines?

Back

They are parallel.

Tags

CCSS.8.EE.B.6

Front

If line A has a slope of 1/2 and line B has a slope of -2, what can be said about the two lines?

Back

They are perpendicular.

Tags

CCSS.8.EE.B.6

Front

What is the slope of a line parallel to the line represented by the equation y = -x + 4?

Back

-1.

Tags

CCSS.8.EE.B.5