Question

Is the following relation a function?

O Yes
Ο Νο

(x) (y)
1 -2
1 -3
2 1
3 -2

Answer 1

Relation

Explanation:

as 1 has two different values, which is not a function.

(it should have unique ore images)

Answer 2

No.

Explanation:

No because it is a one-to-many relation:

1 maps to -2 and -3.

A function is either one-to-one or many-to-one.