To determine the rate of change in a diver's elevation using two points on a graph, you can use the formula for the slope (rate of change) between two points. The formula is:
\[ \text{Rate of Change} = \frac{\text{Change in Elevation}}{\text{Change in Time}} = \frac{E_2 - E_1}{t_2 - t_1} \]
Where:
- \(E_1\) and \(E_2\) are the elevations at times \(t_1\) and \(t_2\), respectively.
To calculate the rate of change, you will need to select two specific points from the graph (with their corresponding elevation and time values) and insert those values into the formula above. If you can provide those two points (or their coordinates), I can assist you in finding the rate of change!