I have a 3D function $z=\dfrac{x}{y}$, and I have no access to a function grapher, but I still need to display this function in a comprehensible way. I thought of a table, but even with a domain of $\left\{x\in\mathbb{R}:x\in(-2,2)\right\}$, the table has 25 rows. That is to say, a lot of rows, and so little space to do so.
Question
What should I do, in my predicament? How can I display a 3D function without a graph?
My main endeavor is to calculate limits concerning this graph, whilst conveying this information to the reader.
Edit
I cannot stress the fact enough that I have no access to graphing functions. If it helps, think that I'm typing this up in plaintext, without graphics of any kind.