Use a graphing calculator and the method of matrix inverses to Give five decimal places, if necessary.
-$$\begin{array} { l }
x - \sqrt { 2 } y = 3.7 \
2.85 x + y = - 8.23
\end{array}$$
A) $\{ ( 3.43297,0.18882 ) \}$
B) $\{ ( - 1.57817 , - 3.73223 ) \}$
C) $\{ ( 2.61630 , - 2.88772 ) \}$
D) $\{ ( 0,0 ) \}$

Question

Use a graphing calculator and the method of matrix inverses to Give five decimal places, if necessary.
-$$\begin{array} { l } 
x - \sqrt { 2 } y = 3.7 \
2.85 x + y = - 8.23
\end{array}$$
A) $\{ ( 3.43297,0.18882 ) \}$
B) $\{ ( - 1.57817 , - 3.73223 ) \}$
C) $\{ ( 2.61630 , - 2.88772 ) \}$
D) $\{ ( 0,0 ) \}$

Quizplus · Accepted Answer

Using matrix inverses, the solution to the system of equations is $(-1.57817, -3.73223)$.

Use a Graphing Calculator and the Method of Matrix Inverses x−2y=3.72.85x+y=−8.23\begin{array} { l } x - \sqrt { 2 } y = 3.7 \\2.85 x + y = - 8.23\end{array}x−2​y=3.72.85x+y=−8.23​

Use a Graphing Calculator and the Method of Matrix Inverses $\begin{array} { l } x - \sqrt { 2 } y = 3.7 \\2.85 x + y = - 8.23\end{array}$