I have a ear infection i have some amoxicillin from 09 is it ok to take?

What kind: There are a number of issues that can produce ear pain that require no abx,including tooth issues,fluid, neuritis,etc. You can certainly assume you have a middle ear infection and take 6+ yr old, out of date meds.It is unlikely to injure you,But the strength of the med is likely poor, and if you really need it,no problem. These sometimes self heal (unless its a different problem).