Matrices and Systems of Linear Equations

Find the determinant

• 13

• -3

• -5

• 13

A matrix that has an equivalent number of rows and columns is called a square matrix

• True

• False

• True but somehow false

• False but somehow true

The __________ of a matrix is the transpose of a cofactor matrix

• Singular

• Adjoint

• Transpose

• Inverse

The inverse of a transposed matrix is the same as the transpose of an inversed matrix

• True

• False

• True but I don't really know

• False, but why?

What is A^-1?

• 
• 
• 
• 

When solving a system AX=B using inverse matrices, you use the equation:

• X=A^-1B

• B=X^-1A

• A=X^-1B

• X=B^-1A

What is the value of the determinant of the matrix?

• -26

• -14

• 26

• 14

The arrow points to what part of a Matrix Equation?

• Coefficient Matrix

• Variable Matrix

• Constant Matrix

• Vegetable Matrix

Are A and B inverses? 
A = ⌈3  -10⌉
        ⌊1      4⌋
B = ⌈2/11  5/11⌉
         ⌊-1/22   3/22⌋
*AB=I

• Yes

• No

Find the inverse.

• A

• B

• C

• D