Solve the Problem $$\left\{ \begin{array} { l } \frac { 1 } { 2 } x + \frac { 1 } { 2 } y = - 1 \\x - y = 4\end{array} \right.$$

question 39

Multiple Choice

Solve the problem.
- $$\left\{ \begin{array} { l } \frac { 1 } { 2 } x + \frac { 1 } { 2 } y = - 1 \\x - y = 4\end{array} \right.$$

• A) \(\{ ( 0 , - 2 ) \}\)
• B) no solution; \(\varnothing\)
• C) \(\{ ( 1 , - 3 ) \}\)
• D) \(\{ ( - 1 , - 2 ) \}\)

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