algebra 2a unit 3

A(n) __ is a rectangular array of numbers

• row

• matrix

• dimension

• transpose

The __ is the number of rows and the number of columns in a matrix.

• size
• dimension
• shape
• format

A(n) __ is all of the numbers in one horizontal line in a matrix.

• row

• columns

• element

• transpose

A number in a matrix is called a(n) ___.

• row

• element

• zero matrix

• matrix

Only matrices of the same ___ can be added or subtracted.

• element

• matrix

• dimension

• zero matrix

A related matrix formed by making the rows of a matrix into columns and the columns into rows is called a(n) ___.

• zero matrix

• dimension

• transpose

• element

Before you can multiply two matrices together, the number of __ in the first matrix must equal the number of rows in the second matrix.

• columns

• rows

• elements

• matrixes

The __, designated 0 is the m x n matrix all of whose entries is 0.

• zero matrix
• unit matrix
• diagonal matrix
• identity matrix

When multiplying matrices, multiply the elements in each __ of the first matrix times the corresponding elements in each column of the second matrix.

• row
• matrix
• column
• element

A coefficient matrix is formed from the coefficients of the __ of a system of linear equations.

• constants

• equations
• variables

• coefficients