Parallel and Perpendicular Slopes

Front

What is the definition of parallel lines in terms of slope?

Back

Parallel lines have the same slope.

Front

What is the definition of perpendicular lines in terms of slope?

Back

Perpendicular lines have slopes that are negative reciprocals of each other.

Front

If the slope of a line is m, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to it is -1/m.

Front

What is the slope of a line that is perpendicular to the line represented by the equation y = 2x + 4?

Back

-1/2.

Front

If two lines have slopes m1 = 3/4 and m2 = 4/3, how are the lines related?

Back

Neither parallel nor perpendicular.

Front

True or False: Parallel lines can intersect at one point.

Back

False.

Front

What is the slope of a line that is perpendicular to the line represented by the equation y = 1/2x + 4?

Back

-2.

Front

If two lines have slopes of 5 and -1/5, how are the lines related?

Back

They are perpendicular.

Front

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

Back

The slopes of two parallel lines are equal.

Front

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

Back

The product of their slopes is -1.