The graph shows a driver’s distance versus time. On a coordinate plane, the x-axis is labeled Time (hours) and the y-axis is labeled Distance (miles). A line connects points (0, 0), (3, 120), (5, 60), and (8, 180).

Which statements are true? Check all that apply.
The average speed for the first 3 hours is 40 miles per hour.
The graph shows a proportional relationship for the full 8 hours.
The average speed for the last 3 hours is 40 miles per hour.
The total distance driven is 180 miles.
The distance always increases as time increases.