Question

Which of the following relations is not a function?

A. {(0,0), (1,0), (2,0)}
B. {(1,2), (3, -5), (-1,7)}
C. {(7, -1), (3, -2), (5, -2)
D. {(-1,3), (4,2), (-1,5)}

Answer 1

it's d

Explanation:

the domain can't repeat for it to be a function and it repeats in d. Which means it isn't a function.

Answer 2

d.

Domains(x-values) that repeat, does not represent a function.