Question

DOMAIN: THE AGES OF THE STUDENTS IN 8TH GRADE; RANGE: THE NUMBER OF SIBLINGS THEY HAVE:
IS THIS A FUNCTION OR NOT A FUNCTION? PLEASE EXPLAIN.

Answer 1

This is not a function because one input (age) can have multiple outputs (number of siblings). For example, there may be students in 8th grade who are 13 years old with 2 siblings, while there may also be students who are 13 years old with 3 siblings. Therefore, the same age can have different numbers of siblings, making it not a function.