Matrices Unit

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

Add

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

Tags

CCSS.HSN.VM.C.8

Can the operation be performed?

• Yes because there are 6 elements in each matrix

• No because the first matrix has negative elements

• Yes because the inner dimensions match even though the outer ones do not

• No because the dimensions don't match

Tags

CCSS.HSN.VM.C.8

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

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

Name the dimensions.

• 2 x 4
• 4 x 2
• -2 x 6
• 1

What are the dimensions of the product of a 2X3 matrix and a 3x1 matrix?

• undefined

• 2 x 1

• 3 x 3

• 3 x 1

Tags

CCSS.HSN.VM.C.8

• 
• 
• 
• 

Tags

CCSS.HSN.VM.C.8

Find B-A

• -3 1

  7 -1

• 1 0

  1 -4

• 4 0

  -6 1

• undefined

Tags

CCSS.HSN.VM.C.8

What are the dimensions of this matrix?

• 4x3

• 3x4

• 3

• 4

Tags

CCSS.HSN.VM.C.6