SOLVE
- $$\begin{array} { l } - 3 x + 4 y = 9 \\3 x - 4 y = 9\end{array}$$

Multiple Choice

SOLVE
- $$\begin{array} { l } - 3 x + 4 y = 9 \\3 x - 4 y = 9\end{array}$$

A) $( 3,0 )$
B) $\left( 0 , \frac { 9 } { 4 } \right)$
C) $\{ ( r , s ) \mid - 3 r + 4 s = 9 \}$
D) $\varnothing$