# I want to complete my figure

This is my very simplest MWE, I honestly say that I haven't done anything new.

\documentclass{article}

\usepackage{tkz-euclide}
\begin{document}
\begin{figure}[h]
\begin{tikzpicture}
\tkzInit[xmax=5,ymax=5,xmin=-5,ymin=-5]
\tkzDrawXY
\end{tikzpicture}
\end{figure}
\end{document}


My question is how can I achieve the figure attached below?

Think it simple. There is no need of advanced packages.

\documentclass[tikz]{standalone}
\begin{document}
\begin{tikzpicture}[>=latex]
\draw[<->] (-5,0) node[left] {$X'$} -- (5,0) node[right] {$X$};
\draw[<->] (0,-5) node[below] {$Y'$} -- (0,5) node[above] {$Y$};
\draw (-4,0) -- (0,2.5);
\draw[|<->] (-4,-.2) -- (0,-.2) node[midway,below] {$80$};
\draw[|<->] (.2,2.5) -- (.2,0) node[midway,right] {$50$};
\draw (-.2,0) |- (0,.2);
\end{tikzpicture}
\end{document}