In Chapter 1, we found equations of lines that passed through a pair of data points or passed close to several data points. Now that we have mastered that skill, we’ll find points of intersection between lines. These points will help us to master the objective for this chapter,

- Analyze applications with systems of linear equations

These points may correspond to break-even points for a business or an equilibrium point for a market. These point are an important part of introductory economics courses.

Section 1 – Systems of Linear Equations

Section 2 – Solving a System of Two Linear Equations Algebraically

Section 3 – Systems with Many Solutions or No Solutions

Section 4 – Solving a System of Linear Equations with Matrices