Parallel and Perpendicular Slopes

Front

What is the slope of parallel lines?

Back

Parallel lines have the same slope.

Front

What is the relationship between the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are negative reciprocals.

Front

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

Back

-1/2

Front

Do perpendicular lines have the same slope?

Back

No, perpendicular lines do not have the same slope.

Front

What describes the relationship between the slopes m = 5 and m = -1/5?

Back

They are perpendicular.

Front

What is the slope of a line that is parallel to the line y = 3x + 1?

Back

3 (same slope as the given line).

Front

If two lines have slopes of 4 and -1/4, what can be said about their relationship?

Back

They are perpendicular.

Front

What is the slope of a line that is perpendicular to the line y = -3x + 2?

Back

1/3 (negative reciprocal of -3).

Front

True or False: The slopes of two parallel lines are different.

Back

False.

Front

True or False: If two lines are perpendicular, the product of their slopes is -1.

Back

True.