This document discusses using matrices to solve systems of equations. It defines what a matrix is and explains how to write a system of equations as an augmented matrix. It outlines the steps of using elementary row operations to solve the system, including examples working through row operations and solving a sample system. Students are assigned practice problems from the text and reminded there will be a quiz on Monday.

1. 8.1 Matrices and
Systems of Equations
Essential Question: How do you use matrices to
solve systems of equations?

2. What's a matrix?

3. Matrix Order
________ x _______
Ex. 1)

4. The Augmented Matrix
Watch out for missing variables!

5. Elementary Row Operations
1.
2.
3.

6. Ex. 2) Elementary Row Operations

7. Ex. 3) Determine the row operations performed
and fill in the blanks.

8. Ex. 4) Solve the system using matrices.

9. Assignment:
8.1 p. 582 #4, 5, 9,
11, 15, 19, 53, 59
Quiz Monday!

10. 7.2 Solutions
7.3 Solutions