Slopes Of Parallel And Perpendicular Lines

Front

What is the slope of a line parallel to a line with slope m = 4?

Back

4

Front

What are the slopes of perpendicular lines?

Back

Opposite reciprocals.

Front

What is the slope of a line perpendicular to a line with slope m = 5/8?

Back

-8/5

Front

What are the slopes of parallel lines?

Back

Identical.

Front

If two lines have the same slope, what can we say about them?

Back

They are parallel.

Front

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

Back

-1/2

Front

What is the slope of a line parallel to a line with slope m = -3?

Back

-3

Front

If two lines are perpendicular, what is the relationship between their slopes?

Back

They are opposite reciprocals.

Front

What is the slope of a line perpendicular to a line with slope m = 1/4?

Back

-4.

Front

If a line has a slope of 0, what type of line is it?

Back

Horizontal.