Answer:
C) Casey is incorrect because more than one student can have the same GPA.
Step-by-step explanation:
Casey states that there exists a function if we have,
Input = Student's GPA
Output = Student's name
Now, a function [tex]y=f(x)[/tex] is a relation where for each value of 'x', the value of 'y' is unique.
That is, for each input, there exists a unique output.
From the given statement, we have that,
A function exists if corresponding to every GPA, there exists only one student, which cannot be true.
There can be more than one students having the same GPA.
Thus, the correct option is,
C) Casey is incorrect because more than one student can have the same GPA.
