Solve the system by using the inverse of the coefficient matrix.
-$$\begin{array} { l }
2 x _ { 1 } + 6 x _ { 2 } = 2 \
2 x _ { 1 } - x _ { 2 } = - 5
\end{array}$$
A) $( 1 , - 2 )$
B) $( - 1,2 )$
C) $( - 2,1 )$
D) $( 2 , - 1 )$

Question

Solve the system by using the inverse of the coefficient matrix.
-$$\begin{array} { l } 
2 x _ { 1 } + 6 x _ { 2 } = 2 \
2 x _ { 1 } - x _ { 2 } = - 5
\end{array}$$
A) $( 1 , - 2 )$
B) $( - 1,2 )$
C) $( - 2,1 )$
D) $( 2 , - 1 )$

Quizplus · Accepted Answer

The Answer of Solve the system by using the inverse of the coefficient matrix.
-$$\begin{array} { l } 
2 x _ { 1 } + 6 x _ { 2 } = 2 \
2 x _ { 1 } - x _ { 2 } = - 5
\end{array}$$
A) $( 1 , - 2 )$
B) $( - 1,2 )$
C) $( - 2,1 )$
D) $( 2 , - 1 )$

Solve the System by Using the Inverse of the Coefficient 2x1+6x2=22x1−x2=−5\begin{array} { l } 2 x _ { 1 } + 6 x _ { 2 } = 2 \\2 x _ { 1 } - x _ { 2 } = - 5\end{array}2x1​+6x2​=22x1​−x2​=−5​

Solve the System by Using the Inverse of the Coefficient $\begin{array} { l } 2 x _ { 1 } + 6 x _ { 2 } = 2 \\2 x _ { 1 } - x _ { 2 } = - 5\end{array}$