Parallel and Perpendicular lines

Front

What is the slope of parallel lines?

Back

The slopes of parallel lines are the same.

Front

What is the slope that is perpendicular to m = 5/8?

Back

The slope that is perpendicular to m = 5/8 is -8/5.

Front

What is the relationship between the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Front

Back

Front

What slope is parallel to m = 4?

Back

The slope parallel to m = 4 is 4.

Front

Define parallel lines in terms of slope.

Back

Parallel lines have the same slope.

Front

Define perpendicular lines in terms of slope.

Back

Perpendicular lines have slopes that are opposite reciprocals.

Front

If a line has a slope of 3, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to it is -1/3.

Front

What is the slope of a line parallel to m = -2?

Back

The slope of a line parallel to m = -2 is -2.

Front

If two lines have slopes of 1/2 and -2, are they parallel, perpendicular, or neither?

Back

They are perpendicular because their slopes are opposite reciprocals.