Algebra-1

The function is nonlinear because it is curved.

Here's an explanation for each option:

A. "This is a nonlinear function because it goes down and up."

This statement describes the behavior of the graph (it goes up and down), which is a characteristic of many functions. However, the key factor in determining linearity is the shape of the graph, not its directionality.

B. "This is a nonlinear function because it's not symmetrical."

Symmetry alone does not determine whether a function is linear or nonlinear. Many nonlinear functions can be asymmetric. Line...