Mathematics, 18.07.2019 22:30 daltonrebekah3532
3. consider the system below. solve the system by using a matrix equation. show your work. picture of the equation here:
Answers: 1
![\left[\begin{array}{cc}4&-2\\3&-1\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right] = \left[\begin{array}{c}-12\\-3\end{array}\right] \\ \\ \Rightarrow\left[\begin{array}{c}x\\y\end{array}\right]= \left[\begin{array}{cc}4&-2\\3&-1\end{array}\right]^{-1}\left[\begin{array}{c}-12\\-3\end{array}\right] \\ \\ = \frac{1}{-4-(-6)} \left[\begin{array}{cc}-1&2\\-3&4\end{array}\right]\left[\begin{array}{c}-12\\-3\end{array}\right]= \frac{1}{-4+6} \left[\begin{array}{c}12-6\\36-12\end{array}\right]](/tpl/images/0105/6292/5343f.png)
![\frac{1}{2} \left[\begin{array}{c}6\\24\end{array}\right]=\left[\begin{array}{c}3\\12\end{array}\right]](/tpl/images/0105/6292/bbbfa.png)
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3. consider the system below. solve the system by using a matrix equation. show your work. picture o...
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