Yes ... all income should be reported no matter how small and even if no tax reporting form will be issued. Technically if you know about it you should report it since you sign the return stating that all the information on it is correct to the best of your knowledge.
If you only had one account that paid $9 in interest then this will probably never be questioned by the IRS however if you had 10 accounts with $9 each they would miss the $99 because that amount is reported to them even if a tax form is not required to be issued.
