Solving Systems of Equations by Graphing Solve each system by graphing. 1. 3. 1 x 1 2 y 3x 4 y 2. y 3 x 1 y 3x 5 4. 4 y x6 3 4x 2 y 8 5. So why would we need to solve systems of equations in the real world??? Here are a couple of examples of ways you will use this type of problem solving in your everyday life: Buying a car with a monthly payment Choosing a type of car insurance Deciding what house/apartment to buy or rent Choosing your right type of health insurance Buying a cell phone plan Choosing which gym to join Suppose you have $20 in a bank account. You start saving $5 each week. Your friend has $5 in his account and is saving $10 each week. Assume that neither you nor your friend makes any withdrawals, after how many weeks will you and your friend have the same amount of money in your accounts. How much money will you each have?