Parabolas are those "U"-shaped functions that have the form of $y=A(x-B)^2+C$. Plotting parabolas is a great
way to learning how the parameters like $A$, $B$ and $C$ effect the look and shape of a parabola. You can learn
how to plot parabolas here.
Now you try. Try fixing the y= statement and the pset statement to plot the variable $x$ on the x-axis and $y$ on the y-axis.
This code will not run. You have to fix the y= statement first to define your parabola (hint: try y=x^2). Next, you
have to fix the pset statement to plot $x$ on the x-axis, and $y$ on the y-axis. Can you do it?