Answer:
Relation
Explanation:
The definition of a relation is just a set of ordered pairs.
A function is a relation in which each domain element is paired with exactly one range element.
It can't be a function because if it is a vertical line, then the x-value is the same for the whole line.
I hope that helps a bit
Answer:
1.5
18 and 33
Step-by-step explanation:2.
c
Answer:
B.
Step-by-step explanation:

So B is the correct answer.