Matrices Review 2

Add

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

Subtract

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

Find B-A

• -3     1
  7     -1
• 1     0
  1     -4
• -4       0
  6     -1
• not possible because rows do not match columns

What is the name of each entry of a matrix?

• Row
• Element
• Dimension
• Rectangle

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

Tags

CCSS.HSN.VM.C.6

In Matrix R (pictured) what is the value of element R_3,2

• 8
• 9.01
• 6
• 1

Dimensions?

• a
• b
• c
• d

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

Tags

CCSS.HSN.VM.C.8

Determine whether each matrix product is defined.  If so, what are the dimensions of the product.
A_2x3  B_2x5

• no
• yes, 2 x 5
• yes , 3 x 5
• yes , 2 x 3

Tags

CCSS.HSA.APR.A.1

find: B*A  (B x A)

• 47     30
  9     5
• 17     15
  42     35
• 10     25
  7     1
• not possible because rows do not match columns