Parallel & Perpendicular Lines

Front

What is the slope of a line parallel to a line with slope m = 4?

Back

The slope is also 4.

Front

What can be said about the slopes of parallel lines?

Back

The slopes of parallel lines are identical.

Front

Given the equations y = 5/7x + 2 and y = 5/7x - 30, are these lines parallel, perpendicular, or neither?

Back

These lines are parallel.

Front

Given the equations y = 3/2x + 2 and y = 2/3x + 6, are these lines parallel, perpendicular, or neither?

Back

These lines are neither.

Front

What is the relationship between the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

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 the slope of one line is 2, what is the slope of a line perpendicular to it?

Back

The slope of the perpendicular line is -1/2.

Front

What is the slope of a line parallel to a line with slope m = -3?

Back

The slope is also -3.

Front

If two lines have slopes of 1/4 and -4, are they parallel, perpendicular, or neither?

Back

They are perpendicular.