Final answer:
To write the system of equations for the given augmented matrix, assign variables to the unknowns x, y, and z. Then rewrite the matrix as a system of equations.
Step-by-step explanation:
To write the system of equations for the given augmented matrix, let's assign variables to the unknowns. Let x, y, and z represent the unknowns in the system. Now we can rewrite the matrix as follows:
x + 0y + 0z = 1
0x + 0y + 0z = 2
0x + y + 5z = 1
From these equations, we can see that the system consists of three equations with three variables: x, y, and z.