This video uses a real world scenario to explore solving systems by graphing. We will begin to solve the problem: Is it more economical to buy a hybrid car or a gas-powered one?

Originally released by Apperson, 2013. Streaming video file encoded with permission for digital streaming by Infobase on April 30, 2015.

What We Know vs. What We Need to Know (4:37); --Comparing Initial and Long-Term Costs (5:12); -- Break-Even Point (4:30); -- Solving the Big Question (3:19); .