Identify Systems That Do Not Have Exactly One Ordered-Pair Solution $$\begin{array} { l } \frac { x } { 7 } + \frac { y } { 14 } = 1 \\\frac { x } { 2 } - \frac { y } { 4 } = 0\end{array}$$

Multiple Choice

Identify Systems That Do Not Have Exactly One Ordered-Pair Solution
- $$\begin{array} { l } \frac { x } { 7 } + \frac { y } { 14 } = 1 \\\frac { x } { 2 } - \frac { y } { 4 } = 0\end{array}$$

A) $\left\{ \left\{ \frac { 7 } { 2 } , 7 \right) \right\}$
B) $\left\{ \left( 7 , \frac { 7 } { 2 } \right\} \right\}$
C) $\left\{ ( x , y ) \mid \frac { x } { 7 } + \frac { y } { 14 } = 1 \right\}$
D) $\varnothing$