### Home > CCA2 > Chapter 6 > Lesson 6.1.1 > Problem 6-14

6-14.

Given the two points

Find the slope of the line that passes through these two points.

Remember that the slope

Find the slope of the line perpendicular to the line that passes through these two points.

The slopes of perpendicular lines are opposite reciprocals of each other.

Example: lines with slopes of

and Remember: the product of opposite reciprocals is

. The slope is

. Describe the relationship between the slopes of perpendicular lines.

See part (b).