### Home > A2C > Chapter 2 > Lesson 2.1.3 > Problem 2-40

2-40.

Determine whether the points ,

*, and*

*are on the same line. Justify your conclusion algebraically.*

Find the slope between points *A* and *B*.

Now find the slope between points *B* and *C*.

2-40.

Determine whether the points ,

Find the slope between points *A* and *B*.

Now find the slope between points *B* and *C*.