Subtracting Matrix

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

• 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

WHAT IS THE ANSWER?

• A

• B

• C

• D

• undefined

• 
• 
• 

• -5

• 5

• 0

• 2

Given these matrices find C - D

• 
• 
• 
• NA

Find Z - W

• 
• 
• 
• Does Not Exist

The matrix N - N is

• 
• 
• 
• 

Find B-A

• -3     1
  7     -1

• 1     0
  1     -4

• 4       0
  -6     0

• not possible because rows do not match columns

Given these matrices find D - A

• 
• 
• 
• NA

Find the values of x, y and z.

• 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