is this graph an example of a nonlinear function?

is this graph an example of a nonlinear function?
Answer
Explanation:
Step1: Recall the definition of a linear function
A linear function has a constant rate of change and its graph is a straight line.
Step2: Analyze the given graph
The given graph is not a single straight line. It has a "V - shape" which means it does not have a constant rate of change throughout its entire domain.
Answer:
Yes