Chapter 16.3, Problem 15PS

To determine

a)

To find:

System equation from the augmented matrix form $\left[\begin{array}{cccc}6& 7& 8& 3\\ 1& 2& 3& 4\\ 0& 1& 3& 4\end{array}\right]$.

To determine

b)

To find:

System equation from the augmented matrix form $\left[\begin{array}{cccc}1& 0& 0& 3\\ 0& 1& 2& 4\end{array}\right]$.

To determine

c)

To find:

System equation from the augmented matrix form $\left[\begin{array}{rrrr}\hfill 1& \hfill 0& \hfill 0& \hfill 32\\ \hfill 0& \hfill 1& \hfill 0& \hfill 27\\ \hfill 0& \hfill 0& \hfill 1& \hfill -5\\ \hfill 0& \hfill 0& \hfill 0& \hfill 3\end{array}\right]$.