q12280694337 y = x^2 in Tikz

\documentclass[dvipdfmx,uplatex]{jsarticle}
\usepackage{tikz}
\usetikzlibrary{patterns,patterns.meta}
\begin{document}
\begin{tikzpicture}
  \fill[pattern={Lines[angle=45, distance=10pt]}, domain=0:2.2, variable=\x]
    (0,-1) -- node[left] {$0$} (0,0) -- plot (\x, {\x*\x}) -- (3,2.2*2.2) -- (3,-1) -- cycle;
  \draw[thick, smooth, domain=-2.2:2.2] plot (\x, {\x*\x}) node[left] {$y = x^2$};
  \draw[->] (-3,0) -- (3,0) node[right] {$x$};
  \draw[->] (0,-1) -- (0,5) node[right] {$y$};
\end{tikzpicture}
\end{document}