\documentclass{article}
\usepackage{tikz}
\usepackage{pgfplots}
\begin{document}

\begin{tikzpicture}
\begin{axis}[
xlabel=$minsup$,ylabel=Time (s),cycle list name=color]
\addplot plot coordinates {(0.01,0.031)(0.02,0.031)(0.03,0.029)(0.04,0.03)(0.05,0.029)};\addlegendentry{FPGrowth-association-rules}\addplot plot coordinates {(0.01,0.035)(0.02,0.032)(0.03,0.032)(0.04,0.029)(0.05,0.029)};\addlegendentry{Apriori-association-rules}\end{axis}
\end{tikzpicture}

\begin{tikzpicture}
\begin{axis}[
xlabel=$minsup$,ylabel=Memory (MB),cycle list name=color]
\addplot plot coordinates {(0.01,0.0)(0.02,0.0)(0.03,0.0)(0.04,0.0)(0.05,0.0)};\addlegendentry{FPGrowth-association-rules}\addplot plot coordinates {(0.01,0.0)(0.02,0.0)(0.03,0.0)(0.04,0.0)(0.05,0.0)};\addlegendentry{Apriori-association-rules}\end{axis}
\end{tikzpicture}

\begin{tikzpicture}
\begin{axis}[
xlabel=$minsup$,ylabel=Output size,cycle list name=color]
\addplot plot coordinates {(0.01,-1)(0.02,-1)(0.03,-1)(0.04,-1)(0.05,-1)};\addlegendentry{FPGrowth-association-rules}\addplot plot coordinates {(0.01,-1)(0.02,-1)(0.03,-1)(0.04,-1)(0.05,-1)};\addlegendentry{Apriori-association-rules}\end{axis}
\end{tikzpicture}

\end{document}
