Solve the System by the Addition Method $$\left\{ \begin{array} { l } 4 x = 8 y + 9 \\4 x = 8 y - 4\end{array} \right.$$

Multiple Choice

Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set
notation to express the solution set.
- $$\left\{ \begin{array} { l } 4 x = 8 y + 9 \\4 x = 8 y - 4\end{array} \right.$$

A) $\left\{ \left( \frac { 1 } { 8 } , \frac { 1 } { 16 } \right) \right\}$
B) no solution; $\varnothing$
C) $\left\{ \left( 0 , - \frac { 9 } { 8 } \right) \right\}$
D) $\{ ( 8,9 ) \}$