Ch 3

Question 1

a matrix that contains only the coefficients of a system of equations

Answer 1

Coefficient matrix

Question 2

A matrix that contains the constants of a system

Answer 2

Constant matrix

Question 3

A method that uses determinants to solve a system of linear equations

Answer 3

Cramer’s rule

Question 4

A square array of numbers for variables in closed between two parallel lines

Answer 4

Determinant

Question 5

A method for finding the determinant of a third order pair

Answer 5

Diagonal rule

Question 6

Illuminate one of the variables in a system of equations by adding or subtracting the equations

Answer 6

Elimination method

Question 7

The intersection of the graph in a System of constraints

Answer 7

Feasible region

Question 8

A square matrix that, when multiplied by another matrix, equals that same matrix. If A is any nXn matrix and I is the nXn identity Matrix
A x I =A and I x A = A

Answer 8

Identity matrix

Question 9

The process of finding the maximum or minimum values of a function for a region defined by inequality

Answer 9

Linear programming

Question 10

Any rectangular array of variables or constants in horizontal rows and vertical columns

Answer 10

Matrix

Question 11

A matrix form used to represent a system of equations

Answer 11

Matrix equations

Question 12

To seek the optimal price or amount that is desired to minimize costs or maximize profits

Answer 12

Optimize

Question 13

A constant

Answer 13

Scalar

Question 14

Multiplying any matrix by a constant called a scalar; the product of a scalar k and an m X n matrix

Answer 14

Scalar multiplication

Question 15

The determinant of a 2×2 matrix

Answer 15

Second-order determinant

Question 16

A matrix with the same number of rows and columns

Answer 16

Square matrix

Question 17

A method of solving a system of equations in which one equation is solved for one variable in terms of the other

Answer 17

Substitution method

Question 18

A set of any qualities with the same variables

Answer 18

System of inequalities

Question 19

Determinant of a 3×3 matrix

Answer 19

Third-order determinant

Question 20

Set of equations with the same variables

Answer 20

System of equations

Question 21

A system of inequalities that forms a region that is open

Answer 21

Unbounded

Question 22

A matrix that only contains the variables of a system of equations

Answer 22

Variable matrix

Question 23

A region is bounded when the graph of a system of constraints in a polygonal region

Answer 23

Bounded