Answer:
![y=1](https://img.qammunity.org/2021/formulas/mathematics/college/hi20r0dca9v0qurgu6mzk81uh89xt7pohf.png)
Explanation:
The horizontal asymptote is the horizontal line that the graph approaches as the x-values increase bigger and bigger positively or negatively.
Based your description, the graph looks like the one in the attachment.
The horizontal asymptote of this graph is y=1.