Parallel & Perpendicular Lines

Front

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

Back

-8/5

Front

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

Back

4

Front

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

Back

2

Front

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

Back

-1/3

Front

What do we call the slopes of perpendicular lines?

Back

Opposite reciprocals.

Front

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

Back

They are parallel.

Front

What is the relationship between the slopes of two parallel lines?

Back

They are equal.

Front

If the slope of one line is 1/2, what is the slope of a line that is perpendicular to it?

Back

-2.

Front

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

Back

1/4.

Front

How do you find the slope of a line given its equation in slope-intercept form (y = mx + b)?

Back

The slope is the coefficient of x, which is m.