Matrix Vocab

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.

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

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

• 8

• 9.01

• 6

• 1

You can multiply a 2X3 matrix by which matrix?

• 2X2

• 2X12

• 3X12

• 2X3

What is the name of each entry of a matrix?

• Row

• Element

• Dimension

• Numbers

Name the order of this matrix.

• 6x2

• 2x6

• 12

• 36

How many columns are in a 5 x 4 matrix?

• 5

• 4

• 20

• 9

In Matrix R (pictured) what element is r₂₃?

• 8

• 9.01

• 6

• 1

Classify the matrix

• Square matrix,  Diagonal matrix

• Triangular matrix, Diagonal matrix

• Square matrix, Identity matrix

• Square matrix, triangular matrix

Given matrices A & B: 
A is a (4x33) matrix
B is a (33x1) matrix
 What are the dimensions of the product of A times B?

• 4x1

• 4x33

• 33x1

• Matrix does not exist