# Precalculus : Solve a System of Equations Using the Multiplicative Inverse

## Example Questions

### Example Question #7 : Inverses Of Matrices

What is the inverse of the identiy matrix   ?

Possible Answers:

The identity matrix

Correct answer:

The identity matrix

Explanation:

By definition, an inverse matrix is the matrix B that you would need to multiply matrix A by to get the identity. Since the identity matrix yields whatever matrix it is being multiplied by, the answer is the identity itself.