Parallel and Perpendicular Lines

Front

What are the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Front

What is the slope that is perpendicular to m = -3?

Back

The slope that is perpendicular to m = -3 is 1/3.

Front

How do you write the equation of a line parallel to y = -1/2x + 3 that goes through the point (4, -1)?

Back

The equation is y + 1 = -1/2(x - 4).

Front

What are the slopes of parallel lines?

Back

The slopes of parallel lines are identical.

Front

How can you determine if two linear equations are parallel, perpendicular, or neither?

Back

You can determine this by comparing their slopes.

Front

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

Back

The slopes of two parallel lines are equal.

Front

What is the relationship between the slopes of two lines that are perpendicular?

Back

The product of the slopes of two perpendicular lines is -1.

Front

If a line has a slope of 2, what is the slope of a line that is perpendicular to it?

Back

The slope of a line that is perpendicular to a line with a slope of 2 is -1/2.

Front

What is the slope-intercept form of a line?

Back

The slope-intercept form of a line is y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

The slope is calculated as (y2 - y1) / (x2 - x1).