# Systems of Two Linear Equations in Two Variables

### Instructions

- The first videos below explain the concepts in this section.
- This page also includes exercises that you should attempt to solve yourself. You can check your answers and watch the videos explaining how to solve the exercises.

### Concepts

- The format and possible solutions for a system of two linear equations in two variables
- Solving a system of two linear equations with two variables
- Using a TI-84 calculator to solve a system of two linear equations with two variables

### Exercises

**Directions:**You should attempt to solve the problems first and then watch the video to see the solution.

- Solve the following system of linear equations: \begin{align*} x+y&=2\\

-2x+y&=-1\end{align*}

- Solve the following system of linear equations: \begin{align*}y&=-x+2\\ y&=2x-1\end{align*}