Parallel and Perpendicular Lines

Front

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

Back

2

Front

What slope is perpendicular to m = 5/8?

Back

-8/5

Front

What slope is perpendicular to m = 3?

Back

-1/3

Front

What is the slope of a line perpendicular to y = 2x - 7?

Back

-1/2

Front

Which figure shows a set of parallel lines?

Back

Figure 4

Front

Define parallel lines.

Back

Lines that never intersect and have the same slope.

Front

Define perpendicular lines.

Back

Lines that intersect at a right angle (90 degrees).

Front

What is the relationship between the slopes of parallel lines?

Back

They have the same slope.

Front

What is the relationship between the slopes of perpendicular lines?

Back

The product of their slopes is -1.

Front

If a line has a slope of 4, what is the slope of a line parallel to it?

Back

4