1. Graphing
   1. Solve each equation for y.
   2. Graph each line.
   3. Point of intersection is the solution.
2. Substitution
   1. Solve for one variable in one of the equations.
   2. Substitute new equation into the other equation.
   3. Solve for remaining variable.
   4. Substitute into either of the original equations to find the other variable.
3. Elimination
   1. Make one pair of variables opposites using multiplication.
   2. Add the equations together.
   3. Solve for remaining variable.
   4. Substitute into either of the original equations to find the other variable Topic
4. Types of Systems
   1. One Solution
      1. Parallel Lines
   2. No Solutions
      1. Non-Parallel Lines
   3. Infinite Solutions
      1. Coincident (Overlapping) Lines