Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set.x + y = -1x + y = -6
A. Cramer's rule does not apply since D = 0; ?
B. {(-1, -6)}
C. Cramer's rule does not apply since D = 0; {(-6 - y, y)}
D. {(0, -7)}
Answer: A
Mathematics
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