Algebra-1

The function is linear because:

A. "This is a linear function because it is going up."

This statement is not entirely accurate in defining linearity. While the function does go up (increases) as x increases, this behavior alone does not determine whether a function is linear or nonlinear.

B."This is a linear function because it is a straight line."

This statement correctly identifies why the function is linear. A linear function has a graph that is a straight line, and this function fits this criterion precisely. The graph o...