A linear system is a system where the independent variable and dependant variable are related in a way that the dependent variable changes at the same rate when the independent variable changes by one unit. An example of a linear system would be a student who is saving money for college by depositing the same amount of money every 14 days into a shoe box under his/her bed. This is linear because the amount of money increases by the same amount every two weeks. On the other hand, if the student deposited the money into a bank account instead, the amount of money in the bank account would not increase linearly because the account is earning interest over time.
