Question

How do I graph the rational function `y=((x-1)(x-5))/((x+3)(x-3))` on a graphing calculator?

Answer 1

It depends on your calculator, but here is a good video...

Explanation:

Here is a video using a TI-84 Plus

That being said, it really depends on what type of calculator you are using. Different options include TI-series: TI-83, TI-84, TI-85, TI-89 and the Casio series: Casio FX-9750GII, Casio Prizm FX-CG10, Casio FX-9860. There are many more, but providing the type graphing utility you are using is very helpful.

If you are not restricted to a graphing calculator, you can use a website like WolframAlpha.com or Desmos.com.

Finally, you can graph this straight in Socratic.org using the interactive Graph feature. It looks like this:

graph{((x-1)(x-5))/((x+3)(x-3))[-20,20,-20,20]}