To answer your question correctly, I would need the specific details regarding the coordinates of Point A and Point B on the linear graph.
Typically, the change in y-values is calculated by subtracting the y-coordinate of Point A from the y-coordinate of Point B. Similarly, the change in x-values is calculated by subtracting the x-coordinate of Point A from the x-coordinate of Point B.
The rate of change of a linear function is calculated as the change in y-values divided by the change in x-values, expressed as:
\[ \text{Rate of Change} = \frac{\text{Change in y-values}}{\text{Change in x-values}} \]
If you provide the coordinates of Points A and B, I can help calculate the values you're looking for.