Question: Doesn’t the graph show that the $v$ is $6$ when $I$ is $2$
1. Let's analyze the relationship between $v$ and $I$ as shown on the graph.
2. Identify the point on the graph where $I=2$.
3. Check the corresponding value of $v$ at $I=2$.
4. If the graph shows $v=6$ at $I=2$, then the point $(2,6)$ lies on the graph.
5. This means that when the current $I$ is $2$, the voltage $v$ is $6$ according to the graph.
6. This confirms the observation that $v=6$ when $I=2$ from the graph.