Ms. Sabemucho tells her Algebra II class that the following two matrices are inverses of each other. How can her students prove her correct?



They can multiply the two matrices and confirm their product is the identity matrix.
They can divide one matrix by the other to confirm that their quotient is the identity matrix.
They can calculate the determinant of both and confirm they are both equal to 0.
They can subtract the two matrices to see if they get the matrix
.