Use Cramer's rule to solve the system or to determine that the system is inconsistent or contains dependent equations. 

In order to solve the system using Cramer's rule, first let's put the system in matrix form:

The matrix D is the matrix with the coefficients of x and y from each equation.

The determinant of a 2x2 matrix is given by the product of the terms in the main diagonal minus the product of terms in the secondary diagonal:

The matrix Dx is given by the matrix D after switching the first column with the coefficient matrix B:

And the matrix Dy is given by the matrix D after switching the second column with the coefficient matrix B:

Now, solving the system, we have:

answer: a

step-by-step explanation: