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

Are the lines y = 6x + 2 and y = -6x + 2 parallel, perpendicular, or neither?

Back

Neither.

Front

If a line is parallel to y = 2x - 7, what is its slope?

Back

The slope is 2.

Front

Are the lines y = 3/2x + 2 and y = 2/3x + 6 parallel, perpendicular, or neither?

Back

Neither.

Front

Define parallel lines in terms of slope.

Back

Parallel lines have identical slopes.

Front

Define perpendicular lines in terms of slope.

Back

Perpendicular lines have slopes that are opposite reciprocals.

Front

What is the slope of a line parallel to y = 4x + 1?

Back

The slope is 4.

Front

What is the slope of a line perpendicular to y = -3x + 5?

Back

The slope is 1/3.

Front

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

Back

They are perpendicular.