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\begin{enumerate}
\item ���̕���\,\fbox{~~~�@~~~}\,�ɂ��Ă͂܂錾�t�܂��͎��������Ȃ����B

\vspace{-2mm}
\begin{itemize}
\item $y$��$x$�̊֐��ŁC�ϐ�$x$�C$y$�̊ԂɁC\fbox{~~\ajMaru{1}~~}~�̊֌W�����藧�Ƃ��C$y$��$x$�ɔ�Ⴗ��Ƃ����B
�������C$a$��$0$�łȂ��萔�ŁC����$a$��~\fbox{~~\ajMaru{2}~~}~�Ƃ����B
\fbox{~~\ajMaru{2}~~}~�����̐��̂Ƃ��́C$x$�̒l����������ƁC����ɑΉ�����$y$�̒l��~\fbox{~~\ajMaru{3}~~}~����B

\item ����\���O���t�́C~\fbox{~~\ajMaru{4}~~}~��ʂ钼���ł���B

\end{itemize}

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~\ajMaru{1}~ & \color{white}{$y=ax$} & ~\ajMaru{2}~ & \color{white}{���萔} \\[-8pt]
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 & & & \\
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%\item $y$��$x$�ɔ�Ⴗ��Ƃ����̏ꍇ�ɂ���$y$��$x$�̎��ŕ\���Ȃ����B
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\item �ȉ��̖₢�ɓ����Ȃ����B

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\begin{enumerate}
\item $\mathrm{A}(\,4,\,5)$�C$\mathrm{B}(\,-4,\,1)$�C$\mathrm{C}(\,0,\,-3)$�Ƃ����O�p�`$\mathrm{ABC}$����̍��W���ʂɏ����Ȃ����B

\item �O�p�`$\mathrm{ABC}$�̖ʐς����߂Ȃ����B(�P�ʂ͕K�v����܂���B)

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\item ���̊֐��̃O���t�����̍��W���ʂɏ����Ȃ����B(�O���t�ɔԍ������Ȃ����B)
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\item $x$��$y$�Ɏ��̊֌W������Ƃ�$y$��$x$�̎��ŕ\���Ȃ����B
\begin{enumerate}
\item $y$��$x$�ɔ�Ⴕ$x=-3$�̂Ƃ��C$y=12$�ł���B

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\item $y$��$x$�ɔ���Ⴕ$x=3$�̂Ƃ��C$y=9$�ł���B

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\item �ȉ��̐}�͕����̒����疈�b$2$\ajLig{cm}�Ō��������o���Ƃ��̗l�q�ł���B�ȉ��̖₢�ɓ����Ȃ����B

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\begin{enumerate}
\item $x$�b��̈����o���������̌����̖ʐς�$y$\ajLig{cm2}�Ƃ���Ƃ�$y$��$x$�̎��ŕ\���Ȃ����B

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{\color{white}{$y=16x$}} \\[-6pt]
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\item (1)�̂Ƃ�$x$��$y$�̕ψ�����߂Ȃ����B

\vfill
\begin{flushright}
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$x$�̕ψ� & $y$�̕ψ� \\
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\hspace{30mm} & \hspace{30mm} \\[-8pt]
{\color{white}{$0\leqq \,x\, \leqq 9$}} & {\color{white}{$0\leqq \,y\, \leqq 144$}} \\[-8pt]
 &  \\
\hline
\end{tabular}
\end{flushright}

\end{enumerate}

\item ���̐}�̂悤�Ȑ����`$\mathrm{ABCD}$������B�_$\mathrm{P}$�͕�$\mathrm{AB}$����C
�_$\mathrm{Q}$�͕�$\mathrm{AD}$���$\triangle \mathrm{APQ}$�̖ʐς��˂�$6$\ajLig{cm2}�ƂȂ�悤�ɓ����܂��B
$\mathrm{AP}$�̒�����$x$\ajLig{cm}�̂Ƃ���$\mathrm{AQ}$�̒�����$y$\ajLig{cm}�Ƃ���Ƃ��ȉ��̖₢�ɓ����Ȃ����B

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\begin{enumerate}
\item $y$��$x$�̎��ŕ\���Ȃ����B

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\item $x$��$y$�̕ψ�����߂Ȃ����B

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\end{enumerate}

\end{document}
