This task card set includes 18 different "Am I a function?" questions for students. Students will have to determine if a relation is a function given a table, set of ordered pairs, mapping diagrams and graphs. Task cards can be printed without answer keys (ie - without the back side) so students can justify in their own words. Additionally, this resource can be added to an interactive notebook, allowing students to review and practice post-class! Simply have students create pockets to hold the cards for future use.