Parallel and Perpendicular Lines

Front

What is the slope of a line parallel to the line represented by the equation y = 2x - 7?

Back

The slope is 2.

Front

If two lines have slopes m = -\frac{1}{3} and m = -\frac{1}{3}, how are these lines described?

Back

The lines are parallel.

Front

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

Back

The slope is 3.

Front

What can be said about the slopes of parallel lines?

Back

The slopes of parallel lines are the same.

Front

What slope is parallel to m = 4?

Back

The slope is 4.

Front

What is the definition of parallel lines in terms of slope?

Back

Parallel lines have the same slope.

Front

What is the slope of a line perpendicular to a line with a slope of 2?

Back

The slope is -\frac{1}{2} (the opposite reciprocal).

Front

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

Back

Their slopes are opposite reciprocals.

Front

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

Back

The slope is \frac{1}{3}.

Front

If a line has a slope of 0, what type of line is it?

Back

It is a horizontal line.