Matrices Quiz

Find the inverse of the matrix.

• 
• 
• 
• No Inverse Exists

Tags

CCSS.HSA.REI.C.9

Find the determinant of the matrix

• A
• B
• C
• D

Calculate the determinant

• 0
• none
• -32
• -8

Calculate the determinant

• 0
• -15
• -70
• 10

What size is this matrix?

• 2x2

• 2x3

• 3x2

• 1x6

Which of the following is the inverse of the matrix A= 
⌈3  0⌉
⌊0  2⌋
*Inverse=
                 ¹∕detA × ⌈d  −b⌉                                      ⌊−c  a⌋

• [1/2    0]
  [0    1/3]
• [-3  0]
  [0  -2]
• ⌈1/3   0⌉
  ⌊0   1/2⌋
• [2  0]
  [0  3]

Tags

CCSS.HSA.REI.C.9

Are A and B inverses? 
A = ⌈3  -10⌉
        ⌊1      4⌋
B = ⌈2/11  5/11⌉
         ⌊-1/22   3/22⌋
*AB=I

• Yes
• No

Tags

CCSS.HSA.REI.C.9

What is the entry at f₄₂?

• 23

• -81

• -44

• 99

• -56

find: B*A

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

Tags

CCSS.HSN.VM.C.8

Tags

CCSS.HSA.REI.C.9