Matrix Row Operation

• This is not a valid row operation!

• This is not a valid row operation!

• This is not a valid row operation!

• This is not a valid row operation!

Given the matrices A and B, find A + B

First Row → ​ (a)  

Second Row →​ ​ (b)  

Third Row → ​ (c)  

Fourth Row → ​ (d)  

• -8       -1

• 2         -7

• -4         6

• -7       1

Find B-2A

​ (a)   ​ (b)  

​ (c)   ​ (d)  

​

• 2

• -5

• -13

• 1

• 4

• -1

• 0

• -6

• -10

• -4

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 3B - 2A

• [22 25]

  [17 3]

• [14 5]

  [-11 3]

• [-14 5]

  [11 -3]

• none of these

Find 2B-5A

• 
• 
• 
• 

• This is not a valid row operation!