Question 1

Solve the system, if possible.

Accepted Answer

A)  x = -14, y = 5, z = -5 
B)  x = 5, y = 9, z = -5 
C)  x = -8, y = -5, z = -5 
D)  x = -5, y = -9, z = 5 
E)  no solution; inconsistent system 
A)  x = -14, y = 5, z = -5 
B)  x = 5, y = 9, z = -5 
C)  x = -8, y = -5, z = -5 
D)  x = -5, y = -9, z = 5 
E)  no solution; inconsistent system

Question 2

Solve the system by the method of substitution.

Accepted Answer

A)  (-4, 2) 
B)  (2, -4) 
C)  (-2, -4) 
D)  (-4, -2) 
E)  (4, 2) 
A)  (-4, 2) 
B)  (2, -4) 
C)  (-2, -4) 
D)  (-4, -2) 
E)  (4, 2)

Question 3

Find the inverse of the matrix.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 4

Find the cofactor C 12 of the matrix.

Accepted Answer

A)  C 12 = 2 
B)  C 12 = 3 
C)  C 12 = -2 
D)  C 12 = -3 
E)  none of these 
A)  C 12 = 2 
B)  C 12 = 3 
C)  C 12 = -2 
D)  C 12 = -3 
E)  none of these

Question 5

Solve using any method.

Accepted Answer

A)    
B)    
C)    
D)    
E)  inconsistent 
A)    
B)    
C)    
D)    
E)  inconsistent

Question 6

Solve the system.

Accepted Answer

A)    
B)    
C)    
D)    
E)  no solution 
A)    
B)    
C)    
D)    
E)  no solution

Question 7

Solve the system by Gauss - Jordan elimination.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 8

Find 4A.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 9

Find the cofactor C 12 of the matrix.

Accepted Answer

A)  C 12 = -3 
B)  C 12 = 2 
C)  C 12 = 3 
D)  C 12 = -2 
E)  none of these 
A)  C 12 = -3 
B)  C 12 = 2 
C)  C 12 = 3 
D)  C 12 = -2 
E)  none of these

Question 10

Solve the system by the method of substitution.

Accepted Answer

A)  (3, 2) 
B)  (2, 3) 
C)  (2, -3) 
D)  (-3, 2) 
E)  (-2, 3) 
A)  (3, 2) 
B)  (2, 3) 
C)  (2, -3) 
D)  (-3, 2) 
E)  (-2, 3)

Solve the system, if possible.

Solve the system by the method of substitution.

Find the inverse of the matrix.

Find the cofactor C₁₂ of the matrix.

Solve using any method.

Solve the system.

Solve the system by Gauss - Jordan elimination.

Find 4A.

Find the cofactor C₁₂ of the matrix.

Solve the system by the method of substitution.

Functions and Their Graphs

Solving Equations and Inequalities

Polynomial and Rational Functions

Exponential and Logarithmic Functions

Trigonometric Functions

Analytic Trigonometry

Additional Topics in Trigonometry

Sequences, Series, and Probability

Topics in Analytic Geometry

Prerequisites

Filters

Exam 8: Linear Systems and Matrices

Solve the system, if possible.

Solve the system by the method of substitution.

Find the inverse of the matrix.

Find the cofactor C 12 of the matrix.

Solve using any method.

Solve the system.

Solve the system by Gauss - Jordan elimination.

Find 4A.

Find the cofactor C 12 of the matrix.

Solve the system by the method of substitution.

Functions and Their Graphs

Solving Equations and Inequalities

Polynomial and Rational Functions

Exponential and Logarithmic Functions

Trigonometric Functions

Analytic Trigonometry

Additional Topics in Trigonometry

Sequences, Series, and Probability

Topics in Analytic Geometry

Prerequisites

Filters

Find the cofactor C₁₂ of the matrix.

Find the cofactor C₁₂ of the matrix.