5_2

\documentclass{standalone}
\usepackage[T1]{fontenc}
\usepackage[latin2]{inputenc}
\usepackage[english]{babel}
\usepackage{tikz}
\usepackage{times}
\usetikzlibrary{calc,through,backgrounds,positioning,fit}
\usetikzlibrary{shapes,arrows,shadows}

\begin{document}

\tikzstyle{place}=[shape=circle, draw, minimum height=10mm]
\tikzstyle{trig}=[shape=circle, draw, dashed, minimum height=10mm]
\tikzstyle{trans}=[shape=rectangle, draw, minimum height=6mm, minimum width=12mm]

\centering
\begin{tikzpicture}[scale=1,inner sep=0.4mm]
\draw[step=5mm,draw=black!30!white,very thin] (-1.9,-0.9) grid (1.9,2.9);
\draw[thick] [->] (-2,0) -- (2,0) node [right=3pt] {$x$};
\draw[thick] [->] (0,-1) -- (0,3) node [right=3pt] {$y$};
\draw [red] (0,0) parabola (1.2, 2.88) ;
%czy jest moĹźliwe dorobienie tego y=x^2 w \draw [red] (0,0) parabola (1.2, 2.88) node [lokalizacja] {tekst};
\draw [red] (1.2,0.49) node {$y=x^2$};
\draw [red] (0,0) parabola (-1.2, 2.88);

\end{tikzpicture}

\end{document}