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    \Large\bf $3$�N~�֐�$y=ax^2$
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    \underline{\hspace{1cm}}�N\underline{\hspace{1cm}}�g\underline{\hspace{1cm}}��
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%���ӁD�𓚂͂��ׂĉ𓚗p���ɋL�����Ȃ����B

\begin{enumerate}
\item �ȉ���\fbox{\hspace{5mm}�@}�ɂ��Ă͂܂錾�t�܂��͎��������Ȃ����B

\hspace{-5mm}
\begin{tabular}{@{}|@{}c@{}|@{}c@{}|@{}c@{}|@{}c@{}|@{}}
\hline
�֐��� & 1���֐� & \,�����\, & {\small \,$2$\!\,��ɔ�Ⴗ��֐�\,} \\
\hline
&&&\\[-12pt]
 & \,$y=ax\!+\!b$\, & \,\fbox{~\ajMaru{4}~}\, & $y=ax^2$ \\[-6pt]
�� &&&\\[-6pt]
   & \,$a$��\fbox{~\ajMaru{1}~}�C\!$b$��\fbox{~\ajMaru{2}~}\, & \multicolumn{2}{@{}c@{}|@{}}{\,$a$�͔��萔\,} \\[-12pt]
&&\multicolumn{2}{@{}c@{}|@{}}{}\\
\hline
&&&\\[-12pt]
\,�O���t�̖���\, & \fbox{~\ajMaru{3}~} & \fbox{~\ajMaru{5}~} & \fbox{~\ajMaru{6}~} \\[-12pt]
&&&\\
\hline
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\ajMaru{1} & {\color{white}{�X��}} & \ajMaru{2} & {\color{white}{�ؕ�}} \\[-8pt]
 & & & \\
\hline
 & & & \\[-8pt]
\ajMaru{3} & {\color{white}{����}} & \ajMaru{4} & {\color{white}{$y=\dfrac{a}{\,x\,}$}} \\[-8pt]
 & & & \\
\hline
 & & & \\[-8pt]
\ajMaru{5} & {\color{white}{�o�Ȑ�}} & \ajMaru{6} & {\color{white}{������}} \\[-8pt]
 & & & \\
\hline
\end{tabular}

\item �ȉ��̖₢�ɓ����Ȃ����B
\begin{enumerate}
\item $y$��$x$��2��ɔ�Ⴕ$x=-3$�̂Ƃ�$y=3$�ł��B$y$��$x$�̎��ŕ\���Ȃ����B

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{\color{white}{$y=\dfrac{1}{\>3\>}x^2$}} \\[-8pt]
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\item �֐�$y=ax^2$�̃O���t��$(-2,\,-8)$��ʂ�Ƃ�$a$�̒l�����߂Ȃ����B

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%$\mathstrut$ \\[-8pt]
{\color{white}{$a=-2$}} \\[-8pt]
\hspace{30mm} \\
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\item �֐�$y=-\dfrac{1}{\,3\,}x^2$��$x$�̕ψ悪$-3\leqq x \leqq 6$�̂Ƃ�$y$�̕ψ�����߂Ȃ����B

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%$\mathstrut$ \\[-8pt]
{\color{white}{$-12\leqq y \leqq 0$}} \\[-8pt]
\hspace{30mm} \\
\hline
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\end{flushright}

\item �֐�$y=-2x^2$��$x$�̒l��$1$����$4$�܂ŕω�����Ƃ��̕ω��̊��������߂Ȃ����B

\begin{flushright}
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%$\mathstrut$ \\[-8pt]
{\color{white}{$-10$}} \\[-8pt]
\hspace{30mm} \\
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\item �֐�$y=ax^2$��$x$�̒l��$2$����$4$�܂ő�������Ƃ��̕ω��̊�����$2$�ł��B���̂Ƃ�$a$�̒l�����߂Ȃ����B

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{\color{white}{$a=\dfrac{1}{\>3\>}$}} \\[-8pt]
\hspace{30mm} \\
\hline
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\end{enumerate}

\vspace{-1mm}
\item �֐�$y=\dfrac{1}{\>4\>}x^2$�̃O���t�����̍��W���ʂɏ����Ȃ����B������$x$�̕ψ��
$-4\leqq x\leqq 6$�Ƃ��܂��B

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\special{ar 3200 600 16 16 0  6.28318530717959E+0000}%
}}%
% STR 2 0 3 0 Black White
% 4 3240 630 3240 730 2 0 0 0
% $\mathrm{B}$
\put(32.4000,-7.3000){\makebox(0,0)[lb]{$\mathrm{B}$}}%
% LINE 2 0 3 0 Black White
% 2 3400 400 1200 2600
% 
{\color[named]{Black}{%
\special{pn 8}%
\special{pa 3400 400}%
\special{pa 1200 2600}%
\special{fp}%
}}%
% STR 2 0 3 0 Black White
% 4 3440 310 3440 410 2 0 0 0
% $\ell$
\put(34.4000,-4.1000){\makebox(0,0)[lb]{$\ell$}}%
\end{picture}%

\vspace{-0.8zw}
\begin{enumerate}
\item ����$\ell$�̎������߂Ȃ����B

\begin{minipage}{12zw}
$\mathstrut$ 
%$B(\>4,\>4)$���

\end{minipage}
\begin{minipage}{10zw}
\begin{flushright}
\begin{tabular}{|c|}
\hline
\hspace{30mm} \\[-8pt]
{\color{white}{$y=2x+6$}} \\[-8pt]
\hspace{30mm} \\
\hline
\end{tabular}
\end{flushright}
\end{minipage}

\item �֐�$y=\dfrac{1}{\,2\,}x^2$�̃O���t��̓_$\mathrm{P}$��$\mathrm{A}$������$y$���Ƃ̌�_��$\mathrm{Q}$�Ƃ���Ƃ��C$\triangle \mathrm{QOP}$��$\triangle \mathrm{AOQ}$�̖ʐς�$4$�{�ƂȂ�_$\mathrm{P}$�̍��W�����߂Ȃ����B�������_$\mathrm{P}$��$x$���W�͐��Ƃ��܂��B

{\color{white}{\begin{tabular}{@{}r@{}c@{}l@{}}
\multicolumn{3}{@{}l@{}}{�_$\mathrm{P}$��$x$���W��$k$�Ƃ����} \\
$1:4$ & $\,=\,$ & $2:k$ \\
$k$ & $=$ & $8$ \\
\end{tabular}
}}

\vfill

\begin{minipage}{12zw}
%$8$ & $\>=\>$ & $\dfrac{1}{\>4\>}x^2$ \\
$\mathstrut$ \\
%$x^2$ & $=$ & $32$ \\
$\mathstrut$ \\
%$x$ & $=$ & $\pm 4\sqrt{\>2\>}$ \\
$\mathstrut$ \\
%\multicolumn{3}{l}{$x>0$���$x=-4\sqrt{\>2\>}$�͕s�K} \\
\end{minipage}
\begin{minipage}{10zw}
\begin{flushright}
\begin{tabular}{|c|}
\multicolumn{1}{c}{} \\
\hline
\hspace{30mm} \\[-6pt]
{\color{white}{$\mathrm{P}\,(\,8,\,32)$}} \\[-8pt]
\hspace{30mm} \\
\hline
\end{tabular}
\end{flushright}
\end{minipage}
\end{enumerate}

\end{enumerate}

\end{document}
