Determine Which of the Following Ordered Pairs $( 3 , - 7 )$

Determine which of the following ordered pairs, $( 3 , - 7 )$ , $( 8,4 )$ , $( 8 , - 3 )$ , $( - 6 , - 7 )$ , or $( 9 , - 8 )$ is a solution to the system of equations below. $\left\{ \begin{array} { l } 6 x - 9 y = 81 \\- 2 x - y = 1\end{array} \right.$

A) $( 9 , - 8 )$
B) $( 8 , - 3 )$
C) $( 8,4 )$
D) $( 3 , - 7 )$
E) $( - 6 , - 7 )$