Final answer:
The correct matrix representation for the given system of equations is Matrix C.
Step-by-step explanation:
The given system of equations is:
2x - y = -4
x - 3y = 18
To represent this system of equations using a matrix, we need to arrange the coefficients of the variables and the constant terms in a matrix. Each row represents an equation and each column represents a variable or constant term.
The correct matrix representation for the given system of equations is:
Matrix C.