Matrix Final Exam

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

What must be true in order to ADD two matrices?

• They must be square.
• The dimensions must be equal.
• The determinant can't equal 0.
• The column of the 1st must equal the row of the 2nd.

Tags

CCSS.HSN.VM.C.8

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

What must be true in order to MULTIPLY two matrices?

• They must be square.

• The dimensions must be equal.

• The determinant can't equal 0.

• The column of the 1st must equal the row of the 2nd.

Tags

CCSS.HSN.VM.C.8

Perform the indicated operation.  If it’s not possible, select Not Possible. 

• 7
  -7
  -6
  20
• 7 
  -9
  -6
  20
• Not Possible
• 7
  -9
  2
  20

Tags

CCSS.HSN.VM.C.8

Multiply

• 20     15    -10
  30     -5         0
• -20      15     -10
  30     -5          0
• 1        8       3
  11     4        5
• 20     -15     10
  -30         5        0  

Tags

CCSS.HSN.VM.C.7

In your own words, describe why a matrix would not have an inverse.

Tags

CCSS.HSA.REI.C.9

What is the formula for finding the inverse of a 2x2 matrix? 

• 
• 
• 
• 

Tags

CCSS.HSA.REI.C.9

In Matrix R (pictured) what is the value of element R_3,2

• 8
• 9.01
• 6
• 1

What comes first in the order?

• Row
• Column

Tags

CCSS.4.NBT.B.5