1. 4.2 Review & Calculator Practice Algebra 2

2.  Class Announcements  PLAN Practice  Homework Questions/Check  4.2 Quick Notes & Calculator Practice  Pairs Practice Raffle  Begin Homework

3.  Begin working on the practice test  Show all work and answers on your Warm-Up Sheet  Have your homework out Stopwatch

5.  How do we state the dimensions of a matrix?  Rows by columns 4 x 3 2 x 1 1)2)

6.  Give the dimensions of. 1) A: 3 x 2, B: 2 x 4 2) A: 2 x 4, B: 4 x 3 3) A: 3 x 3, B: 2 x 3 3 x 4 2 x 3 Not defined

7.  Find the product.

8. 1.Press [2 nd ] and then [x -1 ] to get into the “MATRX” menu 2.Arrow twice to the right to get to the “EDIT” menu 3.Press [ENTER] to edit matrix A a)Select dimensions of matrix b)Insert entries 4.Repeat Steps #1-3 to edit matrix B 5.Press [2 nd ] and then [x -1 ] to get into the “MATRX” menu 6.Stay in the “NAMES” menu to select the matrices and calculate their product AB

9. 1.2.

10.  Work with the person next to you  Mr. V will give your pair a number two problems to work out by handthree problems to work out with a calculator  Select two problems to work out by hand and three problems to work out with a calculator  Circle the two you decide to work out by hand  Turn the worksheet in when you are done and begin on the homework assignment  Homework: pgs. 211-212 #14-16, 23-27, 29  USE YOUR CALCULATOR TO CHECK YOUR ANSWERS ONLY