[durron597]

There are two ways to play this hand, IMO:

If you think they are capable of folding A9/AT some % of the time: I would definitely lead out so that I can push when an ace raises back to me. I want them to think I flopped two pair out of the blinds and will fold.

If you think they are not capable of folding A9/AT some % of the time: I would check like you did, and call any bet up to about 1.25x the size of the pot. Then I would continue on the turn only if I hit trips, 2 pair, or my flush, or if I whiff all three then I would check and call a bet up to about 2/3 pot. Check fold the river if you miss there too.