Parallel & Perpendicular Lines

Front

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

Back

-1/3

Front

What is the slope of a line that is perpendicular to a line with slope m = 5/8?

Back

-8/5

Front

If two lines have slopes -2/3 and 3/2, what can we say about their relationship?

Back

They are Perpendicular.

Front

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

Back

4

Front

If two lines have slopes 6 and -6, what can we say about their relationship?

Back

They are Neither.

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 negative reciprocals of each other.

Front

What is the negative reciprocal of 1/2?

Back

-2

Front

What is the negative reciprocal of -3?

Back

1/3

Front

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

Back

It is a horizontal line.