- 2x + y = -4
- 6x - 2y = 4
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Graphing
- Solve each equation for y
- Graph each line
- Point of intersection is the solution
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Substitution
- Solve for one variable in one of the equations
- Substitue new equation into the other equation
- Solve for remaining variable
- Substitute into either of the original equations to find the other variable
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Elimination
- Make one pair of variables opposites using multiplication
- Add the equations together
- Solve for the remaining variable
- Substitute into either of the original equations to find the other variable