Solve the System by the Substitution or Elimination Method $$\left( \begin{array} { r l } 7 x ^ { 2 } + y ^ { 2 } & = 343 \\x ^ { 2 } + y ^ { 2 } & = 49\end{array} \right)$$

question 47

Multiple Choice

Solve the system by the substitution or elimination method. $$\left( \begin{array} { r l } 7 x ^ { 2 } + y ^ { 2 } & = 343 \\x ^ { 2 } + y ^ { 2 } & = 49\end{array} \right)$$

• A) ( \(-\) 7, 0), (7, 0)
• B) ( \(-\) 7, 0), (0, 7)
• C) (0, \(-\) 7), (7, 0)
• D) (0, \(-\) 7), (0, 7)

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