An individual is driving a car along a straight road. The graph to the right shows the​ driver's distance from home after x hours. ​(a) Use the graph to evaluate ​f(0.5​) and ​f(4​). ​(b) Interpret the slope of each line segment. ​(c) Describe the motion of the car. ​(d) Identify where f is​ increasing, decreasing, or constant.