Identify Systems That Do Not Have Exactly One Ordered-Pair Solution $$\begin{array} { l } y = 15 - 4 x \\16 x + 4 y = 60\end{array}$$

Multiple Choice

Identify Systems That Do Not Have Exactly One Ordered-Pair Solution
- $$\begin{array} { l } y = 15 - 4 x \\16 x + 4 y = 60\end{array}$$

A) $\{ ( 0,15 ) \}$
B) $\{ ( 5 , - 5 ) \}$
C) $\{ ( x , y ) \mid 4 x + y = 15 \}$
D) $\varnothing$ )