Write the Word or Phrase That Best Completes Each Statement $\begin{array} { r } - 3 x ^ { 2 } + 8 y ^ { 2 } = 1 \\9 x + 9 y = 1\end{array}$

Essay

Write the word or phrase that best completes each statement or answers the question.
Which method should be used to solve the system? Explain your answer, including a description of the first step.
- $\begin{array} { r } - 3 x ^ { 2 } + 8 y ^ { 2 } = 1 \\9 x + 9 y = 1\end{array}$