Matrix Vocab

find: B x A

• 47 30

  9 5

• 17 15

  42 35

• 47 9

  30 5

• not possible because rows do not match columns

An m by n rectangular array of numbers is called

• a matrix

• system

• set of equations

• row

• third row, fifth column

• fifth column, third row

• 35th row

• 35th column

The matrix used to represent a system of linear equations is called

• an augmented matrix

• matrix

• identity matrix

• row echelon form

A matrix that has the same number of rows as columns is called a

• square matrix

• rectangular matrix

• augmented matrix

• determinant

Matrix addition is commutative

• True

• False

A matrix that has no inverse is called

• Singular

• Non-singular

• Zero Matrix

• Identity Matrix

Identify the correct entry for Matrix A:

• 11

• 24

• 82

• 98

Identify the correct entry for Matrix A:

• 44

• 82

• 13

• 24

A matrix is a __________ array of numbers.

• Rectangular

• Triangular

• Circular