Inverse Matrices - system of equations

Which method can NOT be used to solve a system of equations?

• substitution
• Cramer's rule
• inverse matrices
• determinants

Tags

CCSS.HSA.REI.C.9

Which matrix is an identity matrix?

• A
• B
• C
• D

Tags

CCSS.HSN.VM.C.10

Find the determinant of matrix A.

• 10
• not possible
• 14
• -14

Calculate the determinant

• 0
• none
• -32
• -8