Answer:
y = 1/x
Explanation:
The graph represented by the graph is

This conclusion can be drawn from the below observations
- The graph is not defined at x = 0 so y is inversely proportional to x
- The graph tends to zero as x tend to infinity which happens when y is inversely proportional to x
- The graph is symmetric about the origin so the exponent of x in the denominator should be an odd number