Matrices

1. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015
BELLWORK
1. Translate A(­8,6) using (x,y) (x­7,y+10). (­15,16)
2. Use the point M(8,­2). Find the component form of the
vector that describes the translation of M'(7,5). <­1,7>
CD, <4, 6>

2. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015
9.2 Matrices
Matrix: arrangement of #s in rows and columns
Element: each number in a matrix
Dimensions: number of rows by columns

3. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015

4. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015
Add or subtract corresponding elements.
*Must have same dimensions.

5. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015
Image Matrix: sum of translation matrix and preimage matrix

6. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015
Multiplying Matrices: can only find the product if
# of columns in 1st matrix = # of rows in 2nd matrix
1 2 3
2 2 3
3 2 3
4 2 3
1 2
2 2
3 2
1 2
2 2
3 2
4 2
X 4X2

7. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015

8. 9.2 Matrices
HW pg. 584 #8­24 evens, 28
February 03, 2015
HW pg. 584 #8­24 evens & 28