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9. μ§μ \( y = 2x + k \) κ° λ ν¨μ \[ y = \left( \frac{2}{3} \right)^{x+3} + 1, \quad y = \left( \frac{2}{3} \right)^{x+1} + \frac{8}{3} \] μ κ·Έλνμ λ§λλ μ μ κ°κ° \( \mathrm{P} \), \( \mathrm{Q} \)λΌ νμ. \( \overline{\mathrm{PQ}} = \sqrt{5} \)μΌ λ, μμ \( k \)μ κ°μ? [4μ ] \begin{itemize} \item[1] \( \frac{31}{6} \) \item[2] \( \frac{16}{3} \) \item[3] \( \frac{11}{2} \) \item[4] \( \frac{17}{3} \) \item[5] \( \frac{35}{6} \) \end{itemize} |