Solve the System by the Substitution Method $$\begin{array} { l } x ^ { 2 } + y ^ { 2 } = 41 \\x + y = 9\end{array}$$

question 245

Multiple Choice

Solve the system by the substitution method.
- $$\begin{array} { l } x ^ { 2 } + y ^ { 2 } = 41 \\x + y = 9\end{array}$$

• A) \(\{ ( 5,4 ) , ( 4,5 ) \}\)
• B) \(\{ ( - 5,4 ) , ( - 4,5 ) \}\)
• C) \(\{ ( 5 , - 4 ) , ( 4 , - 5 ) \}\)
• D) \(\{ ( - 5 , - 4 ) , ( - 4 , - 5 ) \}\)

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