Question 1

Use Cramer's rule to find the solution of the system, if possible. 
A) x = 2, y = -2
B) x = 7, y = -16
C) x = 7, y = -7
D) The system is inconsistent.
E) The equations are dependent.

Accepted Answer

The answer of Use Cramer's rule to find the solution...

Question 2

Find A - B. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Find A - B. 
A) 
B) 
C)...

Question 3

Use a graphing calculator to find the inverse of the matrix. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Use a graphing calculator to find the...

Question 4

Solve the system by Gauss - Jordan elimination. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Solve the system by Gauss - Jordan...

Question 5

Solve the system, if possible. 
A) x = 8, y = -6, z = 3
B) x = 6, y = -7, z = 3
C) x = -6, y = 7, z = -3
D) x = 1, y = -12, z = 3
E) no solution; inconsistent system

Accepted Answer

The answer of Solve the system, if possible. 
A) x...

Question 6

Solve the system by substitution, if possible. 
A) (9, 4)
B) (-4, -8)
C) (-4, 13)
D) (12, -3)
E) no solution; inconsistent system

Accepted Answer

The answer of Solve the system by substitution, if possible....

Question 7

Solve the system by substitution, if possible. 
A) (11, 0)
B) (5, 6)
C) (0, 11)
D) (-1, 12)
E) no solutions

Accepted Answer

The answer of Solve the system by substitution, if possible....

Question 8

Solve the system using Gaussian elimination. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Solve the system using Gaussian elimination. 
A)...

Question 9

Find the product. 
A) 
B) 
C) 
D) cannot multiply
E)

Accepted Answer

The answer of Find the product. 
A) 
B) 
C) 
D)...

Question 10

Find the inverse of the matrix. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Find the inverse of the matrix. 
A)...

Question 11

Use determinants to find the area of the triangle with vertices at the given points. P(0, 0), Q(12, 0), R(12, 9)
A) A = 54
B) A = 9
C) A = 12
D) A = 108
E) none of these

Accepted Answer

The answer of Use determinants to find the area of...

Question 12

Find 4A. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Find 4A. 
A) 
B) 
C) 
D) 
E)...

Question 13

Find the inverse of the matrix. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Find the inverse of the matrix. 
A)...

Question 14

Solve the system, if possible. 
A) x = -6, y = 1, z = -3
B) x = 6, y = -1, z = 3
C) x = 5, y = 8, z = -3
D) x = 0, y = 6, z = -3
E) no solution; inconsistent system

Accepted Answer

The answer of Solve the system, if possible. 
A) x...

Question 15

Find the product. 
A) 
B) 
C) 
D) cannot multiply
E)

Accepted Answer

The answer of Find the product. 
A) 
B) 
C) 
D)...

Question 16

Solve the system using Gauss-Jordan elimination. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Solve the system using Gauss-Jordan elimination. 
A)...

Question 17

Find the cofactor C₁₂ of the matrix. A) C₁₂ = -3 B) C₁₂ = 2 C) C₁₂ = -2 D) C₁₂ = 3 E) none of these

Accepted Answer

The answer of Find the cofactor C₁₂ of...

Question 18

Solve the system, if possible. 
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

Accepted Answer

The answer of Solve the system, if possible. 
A) x...

Question 19

Find the product. 
A) 
B) 
C) 28
D) 
E)

Accepted Answer

The answer of Find the product. 
A) 
B) 
C) 28
D)...

Question 20

Solve the system using Gauss-Jordan elimination. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of Solve the system using Gauss-Jordan elimination. 
A)...

Quiz 8: Linear Systems and Matrices

Use Cramer's rule to find the solution of the system, if possible.

Find A - B.

Use a graphing calculator to find the inverse of the matrix.

Solve the system by Gauss - Jordan elimination.

Solve the system, if possible.

Solve the system by substitution, if possible.

Solve the system by substitution, if possible.

Solve the system using Gaussian elimination.

Find the product.

Find the inverse of the matrix.

Use determinants to find the area of the triangle with vertices at the given points. P(0, 0) , Q(12, 0) , R(12, 9)

Find 4A.

Find the inverse of the matrix.

Solve the system, if possible.

Find the product.

Solve the system using Gauss-Jordan elimination.

Find the cofactor C₁₂ of the matrix.

Solve the system, if possible.

Find the product.

Solve the system using Gauss-Jordan elimination.

Quiz 8: Linear Systems and Matrices

Use Cramer's rule to find the solution of the system, if possible.

Find A - B.

Use a graphing calculator to find the inverse of the matrix.

Solve the system by Gauss - Jordan elimination.

Solve the system, if possible.

Solve the system by substitution, if possible.

Solve the system by substitution, if possible.

Solve the system using Gaussian elimination.

Find the product.

Find the inverse of the matrix.

Use determinants to find the area of the triangle with vertices at the given points. P(0, 0) , Q(12, 0) , R(12, 9)

Find 4A.

Find the inverse of the matrix.

Solve the system, if possible.

Find the product.

Solve the system using Gauss-Jordan elimination.

Find the cofactor C 12 of the matrix.

Solve the system, if possible.

Find the product.

Solve the system using Gauss-Jordan elimination.

Find the cofactor C₁₂ of the matrix.