Use Cramer's Rule to find:
Dx, Dy, x, and y
2x + y = 43x + 2y = 6
First, we are going to find the coefficient determinant; we plug our diagonal values into the formula:
D = (2)(2) – (3)(1) = 4 – 4 = 0
Because we have a D of 0 we don't need to go any further; we know we cannot get set values when D is 0 because the values will have 0 in the denominator.