Math 4 Matrix exam

Perform the matrix multiplication, if possible.

• 
• 
• 
• Cannot be multiplied, dimensions not compatible.

If the matrices can be multiplied, what dimension is the product? If not, write undefined. (a)  

• undefined
• ( 2 x 4 )
• ( 2 x 2 )
• ( 4 x 2 )

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

You can multiply a 2X3 matrix by which matrix? (a)  

• 2X2
• 2X12
• 3X12
• 2X3

What is the name of each entry of a matrix? (a)  

• Row
• Element
• Dimension
• Rectangle

How many rows are in a 7 x 3 matrix?

Mathematical Equivalence

ON

How many columns are in a 5 x 4 matrix?

Mathematical Equivalence

ON

In Matrix R (pictured) what is the value of element r_3,2

Mathematical Equivalence

ON

What are the dimensions of this matrix? (a)  

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

What comes first in the order? (a)  

• Row
• Column