Question

Casey says that a function exists if the input is a student's GPA and the output is the student's name. Is Casey incorrect? Why or why not?
Responses
A Casey is incorrect because students can have the same name.Casey is incorrect because students can have the same name.
B Casey is correct because more than one student can have the same GPA.Casey is correct because more than one student can have the same GPA.
C Casey is incorrect because more than one student can have the same GPA.Casey is incorrect because more than one student can have the same GPA.
D Casey is correct because it's unlikely that two students have the same GPA.

Answer 1

C — Casey is incorrect because more than one student can have the same GPA, so a single GPA could correspond to multiple names and the rule would not assign a single output for each input.