Determining Inverses of Matrices

Which matrix has an undefined inverse?
*undefined matrices have determinants of 0

• [1  2]
  [0  3]
• [1/2  3/4]
  [4/2  9/3]

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⌋

• Yes

• No

Determine whether the matrices are multiplicative inverses.

• Yes
• No
• Elevator
• Pi

Tags

CCSS.HSA.REI.C.9

Determine whether the matrices are multiplicative inverses.

• Yes
• No
• Workout
• Valut-Tech

Tags

CCSS.HSA.REI.C.9

CCSS.HSN.VM.C.8

CCSS.HSN.VM.C.9

Calculate the determinant

• 0
• -15
• -70
• 10

What is the determinant of this matrix?

• 5
• 25
• -25
• 1

Tags

CCSS.HSN.VM.C.12

Are the two matrices inverses?

• yes

• no

• maybe

Tags

CCSS.HSA.REI.C.9

Are they inverses?

• no

• yes

• maybe

• not possible because rows do not match columns

Are they inverses?

• no

• yes

• tomato

• Maybe

Are they inverses?

• no

• yes

• 6 6

  7 5

• 12 10

  10 12

Tags

CCSS.HSF-BF.B.4B