Basic Matrix Operations

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

Tags

CCSS.HSN.VM.C.6

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

Tags

CCSS.HSN.VM.C.6

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

Tags

CCSS.3.OA.A.3

Add

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

Tags

CCSS.HSN.VM.C.8

Subtract

• -5
  -8
  3
  10
• -9
  8
  3
  2
• 5
  -8
  3
  10
• -5
  8
  3
  2

Tags

CCSS.HSN.VM.C.8

Multiply

• 20     15    -10
  30     -5         0
• -20      15     -10
  30     -5          0
• 1        8       3
  11     4        5
• 20     -15     10
  -30         5        0  

Tags

CCSS.HSN.VM.C.7

Can the operation be performed?

• Yes

• No

• Sometimes

• only Ms. Jones knows

Tags

CCSS.HSN.VM.C.8

What must be true in order to ADD two matrices?

• They must be square.

• The dimensions (order) must be equal.

• The determinant can't equal 0.

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

Find the value of x and y if they are equal matrices.

• x=2 , y=5

• x=3, y=3

• x=3, y=5

• x=5, y=3

Tags

CCSS.HSN.VM.C.8

CCSS.HSN.VM.C.6

CCSS.HSA.REI.C.6

CCSS.HSA.REI.C.8

Find B-A

• -3 1

  7 -1

• 1 0

  1 -4

• 4 0

  -6 1

• not possible because rows do not match columns

Tags

CCSS.HSN.VM.C.8