### Home > A2C > Chapter 12 > Lesson 12.1.1 > Problem 12-22

12-22.

Given the points

*A*(3, 2) and*B*(−21, 0), determine each of the following. Homework Help ✎The slope of the line

. The length of

. The midpoint of

. An equation of

.

Take the average of the *x*-values, and of the *y*-values.

Use the slope you found in part (a) to find the *y*-intercept and write an equation.