Parameter
Suppose you want to buy a bike, and that you believe that the amount of money you are going to make next month is defined by the wage you receive per hour times the number of hours you are going to work (y = ax)(Income=wage x hours that you work). You are able to influence the number of hours you work next month (your boss is very flexible), but you think that you will not be able to change the height of your wage (your boss is a real pain when it comes to discussing wages). Then: