# Chapter 3 - Section 3.4 - Slope and Rate of Change - Exercise Set: 71

All points are on the same line.

#### Work Step by Step

Slope between $(2,1)$ and $(0,0)$. $\frac{0-1}{0-2}=\frac{-1}{-2}=\frac{1}{2}$ Slope between $(0,0)$ and $(-2,-1)$. $\frac{-1-0}{-2-0}=\frac{-1}{-2}=\frac{1}{2}$ Slope between $(-2,-1)$ and $(-4,-2)$. $\frac{-2-(-1)}{-4-(-2)}=\frac{-1}{-2}=\frac{1}{2}$ All slopes are the same, so all points are on the same line.

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