how does the graph of

I have tried it using a math software but it shows a straight line with 0 as the y - intercept which seems wrong to me as

I would be delighted if you can show me the graph of it and is there any asymptote? is the asymptote y = 0? , let x = -n , where n is an integer , , the y will be getting closer and closer to 0 but will never reach it