Final answer:
To write an augmented matrix for the given system of equations, arrange the coefficients and constant terms in a matrix with dimensions 2x3.
Step-by-step explanation:
To write an augmented matrix for the system of equations, we need to arrange the coefficients of the variables and the constant terms in a matrix. For the given system:
5y - 4x = -7
-3x - 7y = 15
The augmented matrix is:
| -4 5 -7 |
| -3 -7 15 |
The dimensions of the augmented matrix are 2 rows and 3 columns.