Answer:
It's a Nonlinear relation(or function)
Step-by-step explanation:
A linear function is always a straight line because it has a constant rate, and thus, it is nonlinear.
Also, it should be a relation(it would be more accurate to be called a function), but a function is a relation, so that sentence is still true. (if you don't know what a relation is, check out the internet! it is the greatest source of information developed by humans!)
Hope this helps!
(also, try not to use Caps next time, please?)
Adios!
NOTE: this was re-uploaded for violating community guidelines, as I recommended a source that shall not be named. So if you do need more info, do some research!