The table below represents the distance of a car from its destination as a function of time.

time
(hour)
x
distance (miles)
y
0
900
1
850
2
800
3
750

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 and what does the average rate represent? (4 points)

part c: what would be the domain of this function if the car traveled the same rate until it reached its destination? (2 points)