This task is given to algebra students working on recognizing functions given an expression. This is designed as a warmup, and can act as a way to get students to start thinking about what makes an expression a function. This may offer a nice starting point to a discussion about identifying domain before determining if a relationship is a function.
Microsoft Word version: 912Algebra_IF_Functions_Warmup_Construct_FunctionsWarmup
PDF version: 912Algebra_IF_Functions_Warmup_Construct_FunctionsWarmup