A value that you get closer and closer to, but never quite reach

For example, when we graph y=1/x we see that it gets closer... and closer... to zero but does not ever quite get there.

We then say "As x approaches infinity, then 1/x approaches 0"

And write it like this:

For example, when we graph y=1/x we see that it gets closer... and closer... to zero but does not ever quite get there.

We then say "As x approaches infinity, then 1/x approaches 0"

And write it like this: