![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
For a new car, the market value decreases when the life time of car decreases.
Graph :
Graph of the market value of a new car as the function of time for a period of 20 years.
axis : Market value of the car.
axis : Life time of the car for 20 years.
![\"\"](\"http://www.mathskey.com/userfiles/50-20-18.gif\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
Graph of the new car for a period of 20 years :
.