CPM Homework Banner

Home > CALC > Chapter 2 > Lesson 2.3.3 > Problem 2-129


What is the relationship between the slopes of perpendicular lines? If you know the slope of one of the lines, how can you find the slope of a line perpendicular to it?

Choose a number to represent the slope of line .
Divide by your number.
That is the slope of line .
How do the slopes compare?

The slopes of perpendicular lines are negative reciprocals.