Slopes of Parallel and Perpendicular Lines

Front

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

Back

-1/3

Front

If two lines have the same slope, what can we say about them?

Back

They are parallel.

Front

What is the slope of a line that is parallel to a line with slope m = 3/4?

Back

3/4

Front

Which line is perpendicular to y = 2x - 3?

Back

y = -1/2x + 5/2

Front

What do we call the slopes of perpendicular lines?

Back

Opposite reciprocals.

Front

What is the slope of a line that is perpendicular to a line with slope m = -2?

Back

1/2

Front

If the slope of one line is 0, what is the slope of a line that is perpendicular to it?

Back

Undefined (vertical line).

Front

What is the relationship between the slopes of parallel lines?

Back

They are identical.

Front

If a line has a slope of 5, what is the slope of a line that is perpendicular to it?

Back

-1/5

Front

What is the slope of a line that is parallel to a line with slope m = -3/5?

Back

-3/5.