Parallel and Perpendicular Lines

Front

What are the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Front

What are the slopes of parallel lines?

Back

The slopes of parallel lines are identical.

Front

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

Back

They are perpendicular.

Front

How can you determine if two lines are parallel using their slopes?

Back

If the slopes are identical, the lines are parallel.

Front

What is the slope of a line that is perpendicular to a line with a slope of 3?

Back

The slope of the perpendicular line is -1/3.

Front

Given the equations y = 2x + 1 and y = 2x - 3, are these lines parallel, perpendicular, or neither?

Back

These lines are parallel.

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if they intersect at a right angle (90 degrees).

Front

If line A has a slope of 4, what is the slope of a line that is perpendicular to line A?

Back

The slope of the perpendicular line is -1/4.

Front

Determine if the lines represented by the points (1, 2) and (3, 6) and (2, 4) and (4, 8) are parallel, perpendicular, or neither.

Back

These lines are parallel.

Front

What is the relationship between the slopes of two lines that are neither parallel nor perpendicular?

Back

The slopes of two lines that are neither parallel nor perpendicular are neither identical nor opposite reciprocals.