Comment on Activity 1

From the graph in Figure 2, the difference quotient is approximately ${\displaystyle 4}$ at ${\displaystyle x=1\text{/}4}$, ${\displaystyle 2}$ at ${\displaystyle x=1\text{/}2}$, ${\displaystyle 1}$ at ${\displaystyle x=1}$, ${\displaystyle 1\text{/}2}$ at ${\displaystyle x=2}$, and ${\displaystyle 1\text{/}4}$ at ${\displaystyle x=4}$. These numbers should suggest a familiar relationship.