Parallel and Perpendicular Slopes

Front

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

Back

Parallel lines have the same slope but different y-intercepts.

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 one line is m = 4, what is the slope of a line that is perpendicular to it?

Back

The slope of the perpendicular line is m = -1/4.

Front

Back

Front

Back

The lines are parallel.

Front

If two lines have slopes m = 3 and m = -1/3, what is the relationship between them?

Back

The lines are perpendicular.

Front

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

Back

Front

How can you determine if two lines are parallel using their slopes?

Back

If the slopes are equal, the lines are parallel.

Front

How can you determine if two lines are perpendicular using their slopes?

Back

If the product of their slopes is -1, the lines are perpendicular.

Front

What is the slope of the line represented by the equation y = 3x + 5?

Back

The slope is 3.