Hi guys, I need some help with this delta-epsilon proof.... I really haven't the faintest idea how to get this one started. This was a problem on our last test and most of the class missed it. I'd like to know how to do it for our final next week. As an additional stipulation,we are not allowed to use the quotient of limits rule.

Prove f(x,y) = x/y is continuous using delta-epsilon.