Car Pulls a little to the left. Camber Question??

So my car pulls slightly to the left. So my question is... if it pulls to the left which tire do I need to adjust the camber on? The right one? If so would that mean I would need to add more positive camber or negitive camber?

I am planning on taking it in for a alignment this week. but I need to do some drivin the next couple of days, and want to get it as close as possible.

Thanks,