To find the slope of the linear graph representing parking fees based on the hours parked, we can use the two given points: (2, 20) and (6, 44). The slope (m) is calculated using the formula:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
Where:
- \((x_1, y_1)\) is the first point (2, 20)
- \((x_2, y_2)\) is the second point (6, 44)
Calculating the slope:
\[ m = \frac{44 - 20}{6 - 2} = \frac{24}{4} = 6 \]
Thus, the slope is 6.
This means that the parking fee rises by $6 with each additional hour of parking.
So the correct interpretation is:
The parking fee rises by $6 with each additional hour.