Inconsistent and Dependent Systems and Their Applications
1 Apply Gaussian $$\begin{aligned}5 x + 2 y + z & = - 11 \\2 x - 3 y - z & = 17 \\7 x - y & = 12\end{aligned}$$

Multiple Choice

Inconsistent and Dependent Systems and Their Applications
1 Apply Gaussian Elimination to Systems Without Unique Solutions
- $$\begin{aligned}5 x + 2 y + z & = - 11 \\2 x - 3 y - z & = 17 \\7 x - y & = 12\end{aligned}$$

A) $\varnothing$
B) $\{ ( 0 , - 6,1 ) \}$
C) $\{ ( - 2,0 , - 1 ) \}$
D) $\{ ( 1 , - 5,0 ) \}$