Number Line Generator

Is it possible to have a function to create a number line?

I usually hide all grid lines, move the y-axis to intersect way outside the graphing window, and put both arrows on the x-axis. This gets me close, but every time I go to copy the resulting image, I get way more than just the number line, and when I try and snip it using another application, I never seem to get the arrows snipped nicely. Is it possible to have the x-axis ends a little bit further from the ends of the window so that I can snip a nice number line without the ends looking weird?

I have also tried to graph y=0 and put arrows on the ends, but then when I show the ticks of the x-axis the tick marks get in the way.

Thanks!