1. Not a function (input 4 has two outputs, 5 and 6)
2. Function (each input has exactly one output)
3. Function (each input has exactly one output)
4. Not a function (input -5 has two outputs, 4 and 10)
5. Function (each input has exactly one output)
6. Not a function (input 4 has two outputs, 14 and 15)
7. Not a function (input -6 has two outputs, 4 and 16)
8. Function (each input has exactly one output)
9. Not a function (input 1 has two outputs, 16 and 20)
10. Function (each input has exactly one output)
11. Function (each input has exactly one output)
12. Not a function (input -3 has two outputs, 23 and -6)
Parent Tip: Review the logic above to help your child master the concept of function worksheet 8th grade.