Answer:
2 ft per second
Explanation:
The rate of change can be calculated using the following equation:
[tex]Rate\text{ of change = }\frac{y_2-y_1}{x_2-x_1}[/tex]
Where (x1, y1) and (x2, y2) are the coordinates of two points in the graph.
So, if we replace (x1, y1) by (4, 10) and (x2, y2) by (5, 12), we get that the rate of change is equal to:
[tex]\text{Rate of Change = }\frac{12-10}{5-4}=\frac{2}{1}=2[/tex]
So, the rate of change is 2 ft per second.
