Matrix Vocabulary Review

In a 2 x 2 matrix, the product of the elements along the main diagonal minus the product of the elements off the main diagonal is called the _____________ .

• determinant

• dimensions

• scalar

• order

The number of rows by the number of columns is called the __________ of a matrix .

• determinant

• dimensions

• scalar

• order

What type of matrix has 1s along the main diagonal and 0s elsewhere?

• zero matrix

• square matrix

• identity matrix

• inverse matrices

What type of matrix has the same number of rows and columns?

• zero matrix

• square matrix

• identity matrix

• inverse matrices

What type of matrix has zeros for all of its elements?

• zero matrix

• square matrix

• identity matrix

• inverse matrices

______________ matrices are matrices whose product (In both orders) is the identity matrix.

• zero

• square

• identity

• inverse

A(n) ____________ is a rectangular arrangement of numbers into rows and columns.

• matrix

• square

• identity

• scalar

In matrix algebra, what do we call a real number?

• constant

• variable

• identity

• scalar

The commutative property holds true for which matrix operation?

• addition

• subtraction

• multiplication

• division

Which matrix behaves the same way the number 1 does in the real number system?

• inverse

• identity

• square

• zero