Solve the System of Equations by the Substitution Method $2 y = x + 8$

Multiple Choice

Solve the system of equations by the substitution method.
- $2 y = x + 8$
$2 x + 4 y = 0$

A) $\{ ( - 4,2 ) \}$
B) $\{ ( 2 , - 4 ) \}$
C) $\{ ( - 4 , - 2 ) \}$
D) $\{ ( 4,1 ) \}$