1. Section 4-2 Adding and Subtracting Matrices

2. I. Matrices can be added or subtracted if they are the same size Both matrices are 2x2 + To add them just add the corresponding elements

3. Both matrices are 2x2 Both matrices are still 2x2 1.) Find the resulting matrix: Scalar multiplication

4. 2.) Add the matrices:

5. 3.) Find the coordinates of the vertices of quadrilateral QRST if it is moved 3 units to the right and 5 units up QRST Vertices (-2, 9), (-5, 2), (2, 1), (3, 8) Add (3, 5), (3, 5), (3, 5), (3, 5) +

6. Homework Practice Worksheet 4-2 Page 197 Problems: 11-19 (odd),