Parallel and Perpendicular Lines (Slope-Intercept Form)

Front

What is the slope of parallel lines?

Back

The slopes of parallel lines are identical.

Tags

CCSS.8.EE.B.5

Front

What is the slope of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Tags

CCSS.8.EE.B.5

Front

Given the equations y = 6x + 2 and y = -6x + 2, are these lines parallel, perpendicular, or neither?

Back

Neither.

Tags

CCSS.8.EE.B.6

Front

If two lines have slopes of 3 and -1/3, what is their relationship?

Back

They are perpendicular.

Tags

CCSS.8.EE.B.6

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and never intersect.

Tags

CCSS.8.EE.B.5

Front

What does it mean for two lines to be perpendicular?

Back

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

Tags

CCSS.8.EE.B.6

Front

If the slope of one line is 2, what is the slope of a line parallel to it?

Back

The slope of a line parallel to it is also 2.

Tags

CCSS.8.EE.B.5

Front

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

Back

The slope of a line perpendicular to it is -1/4.

Tags

CCSS.8.EE.B.6

Front

What is the slope-intercept form of a line?

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

How can you determine if two lines are parallel from their equations?

Back

If the coefficients of x in both equations are the same, the lines are parallel.

Tags

CCSS.8.EE.C.8B