To calculate the rate of change of a linear function between two points, you can use the formula:
\[ \text{Rate of Change} = \frac{y_2 - y_1}{x_2 - x_1} \]
From the data given:
- For \(x = 5\), \(y = 9\)
- For \(x = 6\), \(y = 11\)
Here, \(x_1 = 5\), \(y_1 = 9\), \(x_2 = 6\), and \(y_2 = 11\).
Now, plug the values into the formula:
\[ \text{Rate of Change} = \frac{11 - 9}{6 - 5} = \frac{2}{1} = 2 \]
Thus, the rate of change of the function between \(x = 5\) and \(x = 6\) is \(2\).