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  Module 1 Section 1 Section 2 Section 3
  Module 2 Section 1 Section 2 Section 3
  Module 3 Section 1 Section 2 Section 3
  Module 4 Section 1 Section 2 Section 3
  

Module 4—Section 3: More Linear Systems

Lesson A: Number of Solutions of a Linear System

Demo: Solving a Linear System by Substitution

Demo: Solve a Linear System: Subtracting to Eliminate a Variable

Demo: Determining the Number of Solutions of a Linear System

Demo: Designing a System of Equations

Lesson B: Solving Problems Using Linear Systems

Demo: Solving a Linear System by Substitution

Demo: Solving a Linear System by Elimination

Demo: Solving Interest Problems by Substitution

Demo: Using a Linear System to Solve a Problem Involving Money