Solve the System by the Substitution Method $$\left\{ \begin{array} { l } 3 x + y = 11 \\9 x + 3 y = 33\end{array} \right.$$

question 69

Multiple Choice

Solve the system by the substitution method.
- $$\left\{ \begin{array} { l } 3 x + y = 11 \\9 x + 3 y = 33\end{array} \right.$$

• A) \(\{ ( 0,11 ) \}\)
• B) \(\{ ( x , y ) \mid 3 x + y = 11 \}\)
• C) \(\varnothing\)
• D) \(\{ ( 5 , - 4 ) \}\)

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