Quiz Matrices

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• 
• 
• 
• none of these

Evaluate the determinant of the matrix below.

• 30

• -50

• -30

• -40

• none of these

Find the product of the following matrices.

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• none of these

Suppose matrix A and matrix B are both 2 x 1 matrices. Which of the following are the dimensions of the product, AB.

• 1 x 1

• 2 x 1

• 2 x 2

• 1 x 2

• you can not multiply these matrices together

Evaluate the determinant of the matrix below.

• -120

• 20

• 120

• -20

• none of these

What is the inverse of the following matrix?

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• 
• none of these

Which matrix does not have an inverse?

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• 
• 
• all of these matrices have an inverse

What is the product of the following matrices?

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• 
• 
• 
• 

What is the solution of the linear system?

• 
  

  $x=3,\ y=3$
  

• $x=-3,\ y=-3$

• $x=3,\ y=-3$

• $x=8,\ y=-10$

• none of these

Solve the following matrix equation.

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• 
• 
• 
• none of these