Use Cramerʹs rule to solve the system of equations. If D = 0, use another method to determine the solution set.
-$$\begin{array} { l }
- 7 x - 6 y = - 44 \
- 3 x + 4 y = 14
\end{array}$$
A) $\{ ( 1,6 ) \}$
B) $\{ ( 2,5 ) \}$
C) Cramer's rule does not apply since $D = 0$;
D) $\{ ( 2,6 ) \}$

Question

Use Cramerʹs rule to solve the system of equations. If D = 0, use another method to determine the solution set.
-$$\begin{array} { l } 
- 7 x - 6 y = - 44 \
- 3 x + 4 y = 14
\end{array}$$
A) $\{ ( 1,6 ) \}$
B) $\{ ( 2,5 ) \}$
C) Cramer's rule does not apply since $D = 0$;
D) $\{ ( 2,6 ) \}$

Quizplus · Accepted Answer

Using Cramer's rule, the determinant D is not zero, and solving gives the solution (2,5).

Use Cramerʹs Rule to Solve the System of Equations −7x−6y=−44−3x+4y=14\begin{array} { l } - 7 x - 6 y = - 44 \\- 3 x + 4 y = 14\end{array}−7x−6y=−44−3x+4y=14​

Use Cramerʹs Rule to Solve the System of Equations $\begin{array} { l } - 7 x - 6 y = - 44 \\- 3 x + 4 y = 14\end{array}$