MATRICES 1

How do we label a matrix?

• Column x Row

• Row x Column

What are the dimensions of Matrix P?

• 3 x 4

• 4 x 3

• 3 x 3

• 2 x 4

What is element P23?

• 10

• 7

• 8

• 11

Add

• 11    8
  -4     2
• 3     2
  -6    -6
• -3    2
  -4    -6
• 10    8
  -6    2

Tags

CCSS.HSN.VM.C.10

CCSS.HSN.VM.C.8

Can the operation be performed?

• Yes
• No
• Sometimes
• only Mrs. Jordan knows

Tags

CCSS.HSN.VM.C.7

CCSS.HSN.VM.C.8

What must be true in order to ADD two matrices?

• They must be square.

• The dimensions or order of the matrix must be equal.

• The determinant can't equal 0.

• The column of the 1st must equal the row of the 2nd.

Find A+B

• 8     10
  8      1 
• 12     25
  7     1
• 10     30
  0     1
• can't add two together because the rows dont match columns

Tags

CCSS.HSN.VM.C.8

What the numbers A11, A12 are called

• numbers of the matrix

• elements of the matrix.

• elements of matrix A.

• numbers and letters of the matrix

• all of the above

Element a32 is belongs to which row and column in a given matrix A.

• 2nd row, 3rd column

• 3rd row , 2nd column

• can’t decide

• None of the above

What is the order of given matrix

2 4 5 5 7

7 5 7 8 1

9 0 3 2 4

• 5 × 3

• 5 × 5

• 3 × 5

• 3 × 3