3-d plotting over a domain

How can I sketch a 3-d graph over a specified domain? For example, if I had y=x^2 and wanted to graph it over {(x,y):-3<=x, y<=3) If I didn't want the 3-d graph, I could just use plot, but I can't figure out how to graph it over the domain and have it be 3-d.

Answer 1

[Joseph Cheng]

check out the functions surf(), plot3() and any of the related functions at the end of their documentation.