The table below represents the velocity of a car as a function of time:

Time

(hour)

x Velocity

(miles/hours)

y

0 50

1 52

2 54

3 56

Part A: What is the y-intercept of the function, and what does this tell you about the car? (4 points)

Part B: Calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points)

Part C: What would be the domain of the function if the velocity of the car was measured until it reached 60 miles/hour and the car does not change motion?