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

Question

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

Quizplus · Accepted Answer

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

Use Cramerʹs Rule to Solve the System of Equations x+y+z=−1x−y+3z=73x+y+z=−3\begin{array} { r } x + y + z = - 1 \\x - y + 3 z = 7 \\3 x + y + z = - 3\end{array}x+y+z=−1x−y+3z=73x+y+z=−3​

Use Cramerʹs Rule to Solve the System of Equations $\begin{array} { r } x + y + z = - 1 \\x - y + 3 z = 7 \\3 x + y + z = - 3\end{array}$