Matrices Vocab

Question 0

Dimensions

Answer 0

Tells how many rows and columns the matrix has

Question 1

Address

Answer 1

Number in a matrix that tells you the row and column of that number

Question 2

Main Diagonal

Answer 2

Upper left corner to lower right corner

Question 3

Square Matrix

Answer 3

The matrix length (row) and width (column) are the same

Question 4

Scalar

Answer 4

Scales the number in a matrix using multiplication

Question 5

Matrix

Answer 5

A rectangular array of numbers enclosed in brackets

Question 6

Entry

Answer 6

Value in a matrix

Question 7

Matrix Product

Answer 7

The product of two or more matrices

Question 8

Multiplicative Identity Matrix

Answer 8

Any square matrix named with the letter “I” that has all of the entries along the main diagonal equal to 1 and all other entries are 0

Question 9

Translation Matrix

Answer 9

Matrix used to translate coordinates on the coordinate plane

Question 10

Reflection Matrix

Answer 10

A matrix that creates a minor image by reflecting each vertex over a specified line of symmetry

Question 11

Rotation Matrix

Answer 11

A matrix used to rotate a figure

Question 12

Determinate

Answer 12

The difference of the products of the diagonals

Question 13

Coefficient Matrix

Answer 13

A system of linear equations in a standard form is the matrix by the coefficients for the variables in the equations

Question 14

Cramer’s Rule

Answer 14

An expression for the solution of a system of linear equations with as many equations as unknowns Ax=B

Question 15

Multiplicative Inverse

Answer 15

For a square matrix A, the inverse is written A-1. When A is multiplied by A-1 the result is the identity matrix I. Non-square matrices cannot have an inverse

Question 16

Matrix Equation

Answer 16

AX=B, where A is the coefficient matrix

Question 17

Variable Matrix

Answer 17

AX=B, X is the variable matrix

Question 18

Constant Matrix

Answer 18

AX=B, B is the constant matrix

Question 19

Augmented Matrix

Answer 19

Consists of the coefficient and constant terms of a system of linear equations

Question 20

Row Operation

Answer 20

To change form of the matrix

Question 21

Row Reduction

Answer 21

The process of performing elementary row operations on an augmented matrix to solve a system

Question 22

Reduced Ro-Echelon Form

Answer 22

Going to a matrix to a y= or x=
[1 0 : 5] -> 1x=5
[0 1 : 2] -> 1y=2