Solve the System by the Best Method $$\left\{ \begin{array} { c } x + 8 y = - 61 \\8 x + 7 y = - 89\end{array} \right.$$

question 71

Multiple Choice

Solve the system by the best method. Use set notation to express the solution set.
- $$\left\{ \begin{array} { c } x + 8 y = - 61 \\8 x + 7 y = - 89\end{array} \right.$$

• A) no solution; \(\varnothing\)
• B) \(\{ ( - 5 , - 7 ) \}\)
• C) \(\{ ( 5 , - 6 ) \}\)
• D) \(\{ ( - 6 , - 6 ) \}\)

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