7.1 Solving Systems of Two Linear Equations

1. Solve a system of two linear equations by addition.
   • Solving a system using the addition method (Mathispower4u)
   • Solving a system using the addition method - start watching at 3:50
2. Solve a system of two linear equations by substitution.
   • Solving a system using the substitution method (Mathispower4u)

3. Recognize when a system of two linear equations has no solution or infinitely many solutions.
   • A system of equations with no solution (Mathispower4u)
   • A system of equations with infinitely many solutions (Mathispower4u)
4. Solve a system of two linear equations by graphing.
   • Solving a system by graphing (Mathispower4u)
   • Solving a system by graphing (Mathispower4u)