Algebra+2+chapter+4

In this chapter, you'll quickly review solving systems of equations using substitution and elimination. You'll build on that knowledge to solve a system of equations with three variables and three equation then you'll turn to matrices. The first foray into matrices is just setting them up and "solving" them using Gaussian elimination (or finding reduced row echelon form). Depending on what the district says for us to do, we may be able to study properties of matrices and see what all they can do...or we may just stop after Gaussian elimination.

Solve system by graphing

[|Solve system by substitution]

(if you're computer is older, try this doc)

[|Solve system by elimination #1] (this is patrickjmt)

[|Solve system by elimination #2] (this is khanacademy)

(if your computer is older, try this doc)

[|Systems of equations] This is about as funny as a math teacher can get...

[|3 equations, 3 unknowns] ...but he may be a bit into himself. Let me know what you think!

[|Solve matrices] My favorite, Patrickjmt, explaining how to solve matrices using reduced row

[|Another example of reduce row matrices] Not exciting, just give me the math.

[|Basic matrix operations] Patrick jmt explaining how to add, subtract, and do scalar multiplication

[|Multiplying matrices together] Patrick jmt explains how to multiply matrices (there's also an example #2 on youtube if you need it)