Algebra 1: Beginning Algebra

Systems of Equations Video Review Lessons

Linear Systems in Two Variables
• An Introduction to Linear Systems
• Solving a System by Graphing
• Solving a System by Substitution
• Solving a System by Elimination
Linear Systems in Three Variables
• An Introduction to Systems in Three Variables
• Solving Systems with Three Variables
• Solving Inconsistent Systems
• Solving Dependent Systems
• Solving Systems with Two Equations
Applications of Linear Systems
• Investments
• Partial Fractions
Solutions by Matrix Methods
• An Introduction to Matrices
• Using the Gauss-Jordan Method
• Using Gauss-Jordan: Another Example
Determinants
• Evaluating 2x2 Determinants
• Evaluating 3x3 Determinants
Cramer's Rule
• Using Cramer's Rule
• Using Cramer's Rule in 3x3 Determinants
Working with Inequalities
• An Introduction to Graphing Linear Inequalities
• Graphing Inequalities with Two Variables
• Graphing the Solution Set of a System of Inequalities
Systems of Nonlinear Equations
• Solving a Nonlinear System by Elimination
• Solving a Nonlinear System by Substitution