Slopes of 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 relationship between the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite (or negative) reciprocals.

Front

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

Back

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

Front

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

Back

Front

What is the slope of the line represented by the equation y = 4x + 1?

Back

The slope is 4.

Front

Determine if the lines y = 2x + 3 and y = 2x - 5 are parallel, perpendicular, or neither.

Back

They are parallel.

Front

What is the slope of a line that is perpendicular to y = -rac{1}{2}x + 4?

Back

The slope is 2.

Front

If two lines have slopes of 5 and -rac{1}{5}, what is their relationship?

Back

They are perpendicular.

Front

Back

Front

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

Back

The slope of a line parallel to it is also -3.