They are here
https://answers.yahoo.com/activity/followed-questions
.
It's not easy to find them anymore (since the format change last year). Click on your username in the box at the upper right of the screen or your avatar at the top left, and select "View Answers Profile". When you're in your YA profile/activity, click your username again, at the top left of the page. That takes you into your YA activity again, but it's the old format and you can find your saved questions when you click More>My Followed Questions (or bookmark the link I provided above).