Solving Matrix Equations

• A

• B

• C

• D

Tags

CCSS.HSA.REI.C.8

• A

• B

• C

• D

Tags

CCSS.HSA.REI.C.8

What is A^-1?

• 
• 
• 
• 

Tags

CCSS.HSA.REI.C.9

What is the inverse of this matrix?

• _{(1/25)  (-4/25)
  (3/25)  (13/25)}

• _{(1/5)  (-4/5)
  (3/5)  (13/5)}

• _{(6/25)  (-2/25)
  (2/25)  (9/25)}

• _{(1/150)  (-4/150)
  (3/150)  (13/150)}

Tags

CCSS.HSA.REI.C.9

What do w, x, y and z equal in this matrix equation?

• w = 13, x = 4, y = 7, z = 23

• w = 13, x = -4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 17

Find 2B-5A

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• 
• 
• 

Solve:
-4x - 5y - z = 18
-2x - 5y - 2z = 12
-2x + 5y + 2z = 4

• (4, 0, -2)

• (-4, 0, -2)

• Many Solutions

• I did not get any of the answers above so I am assuming none of the above.

Solve the system.  Write the matrix equation on your own paper.
5x + 8y = -12
3x + 5y = -7

• (1, -10)

• No solution

• (-4, 1)

• (1, 10)

Tags

CCSS.HSA.REI.C.9

Find 3B - 2A

• [22 25]

  [17 3]

• [14 5]

  [-11 3]

• [-14 5]

  [11 -3]

• none of these

Find 2A-3B

• -3 1

  7 -1

• 1 0

  1 -4

• -4 0

  6 -1

• -14 -5

  11 -3