Identifying Parallel and Perpendicular Slopes

Front

What are the slopes of perpendicular lines?

Back

Opposite reciprocals.

Front

What slope is perpendicular to m=-1/4?

Back

4.

Front

What are the slopes of parallel lines?

Back

Identical.

Front

If two lines have slopes m=-1/3 and m=-1/3, what relationship do they have?

Back

Parallel.

Front

Which slope would be perpendicular to the line y = 2/3x + 3?

Back

m=-3/2.

Front

Define 'slope'.

Back

The measure of the steepness of a line, calculated as the rise over run.

Front

What is the slope of a horizontal line?

Back

0.

Front

What is the slope of a vertical line?

Back

Undefined.

Front

If two lines are parallel, what can be said about their slopes?

Back

Their slopes are identical.

Front

If two lines are perpendicular, how are their slopes related?

Back

Their slopes are opposite reciprocals.