9 mph on a hill? ? ? and you're complaining? Now listen here young lady;
you got YOUR BIKE UP that hill!! I know the cars that passed you did not have to slow down, but they are burning fossil fuels to do it! without that gasoline, they wouldn't make it up the hill either. And YOU did it with your two little legs and a little bit of oxygen..

On my commute, I have a hill I have to go up. I've done this commute HUNDREDS of times, over 100 times this year alone. And i probably got up that hill at 9mph twice. (the rest of the time I was slower) that's just the way it is..

you're doing fine.