Introduction, useful URL's. (Audio 0:00)

What is linear algebra? Definition of linear equations. (Audio 12:00)

Examples and nonexamples of Linear equations. Examples of solving. A question: When does a given linear equation have at least one solution?. (Audio 19:00, 33:00)

Answer to the question. New question: When are solutions unique? Definition of Linear Systems. Goal: Answer the same two questions for systems. (Audio 30:00, 34:00)

Traffic flow application example. (Audio 40:00, 58:00)

Solutions to the example, and mention of another type of example. (Audio 57:00, 1:01:00)
