How can you represent the system of equations with a matrix?
11x-12y=7
5x+12y=-7
The system of equations can be represented with a matrix by writing the coefficients of the variables as the entries of a matrix, and the constants on the right side of the equal sign as another column in the matrix.
The matrix representation of the system of equations:
| 11 -12 | | x | | 7 |
| 5 12 | | y | = |-7 |