Reciprocal of a Quadratic Function

Hello!

My teacher likes to kick off a new unit by making us do a question on our own so I am a little confused..

__Reciprocal of a Quadratic Function__

I have a question that shows 3 graphs - and an equation of f(x)= 1/x^2-1

The question is "which graph shows f(x)= 1/x^2-1"

I've already found my answer - but it was lengthy; I found the domain - vertical asymptotes/end behaviours/horitzontal asymptotes/x+yintercepts/than graphed it on my own

**My question for you guys is - is there a way to figure out which graph represents **f(x)= 1/x^2-1 **without having to do all those steps? By just looking at it..?**

**Thanks for your patience & time. **