Question: What two functions within the NumPy library could you use to solve a system of linear equations?

1. `linalg.eig() and .matmul()`
2. `linalg.inv() and .dot()`
3. `linalg.det() and .dot()`
4. `linalg.inv() and .eye()`

Answer: The correct answer of the above question is Option A:`linalg.eig() and .matmul()`