Answer:
The horizontal asymptote of the function is y=0.
Explanation:
Given :

To find : What is the horizontal asymptote of the function?
Solution :
In a rational function,
If the degree of the numerator < degree of denominator then a horizontal asymptote can be found.
In the given function,

The degree of numerator is 1.
The degree of denominator is 2
The degree of the numerator < degree of denominator
When this condition satisfy then horizontal asymptote is always y=0
Therefore, The horizontal asymptote of the function is y=0.