1. Mr. Hartzer, Hamtramck High School 2017-18
Algebra II
Mr. Hartzer, Hamtramck High School

2. DO NOW Solve for x: 5𝑥−7=2𝑥+2 Solve for y: 𝑥+2𝑦+1=2𝑥−𝑦+3
Evaluate 𝑓 𝑥 =2𝑥+1 when 𝑥=4

3. This Week’s Objective 3-5/3-6
Students will: explore basic matrix operations.

4. Today’s Objective 3-5
I will be able to: give the dimensions of a matrix and add two matrices together.
CCSS: N-VM.C.8, N-VM.C.10

5. Today’s Agenda
Do Now
Teaching website
Notes on matrices
Practice

6. Website

7. Matrix Basics
A matrix is a rectangular array of numeric expressions.

8. Matrix Basics
Matrix A is a 2 x 3 matrix. Always list the height FIRST.
Use brackets to indicate
a matrix.

9. PRACTICE!
matrices/e/matrix_dimensions

10. Matrix Basics
Each expression is called an element.
𝑎 12 = 𝐴 1,2 =4: The
Element in row 1, col 2
is 4.

11. PRACTICE!
matrices/e/understand-matrix-coordinates

12. Matrix Operations