What are the characteristics of a curved relationship and how does it differ from a linear relationship?

A curved relationship is characterized by a non-linear pattern where the relationship between two variables does not follow a straight line. This means that as one variable changes, the other variable does not change at a constant rate. In contrast, a linear relationship is characterized by a straight line where the relationship between two variables changes at a constant rate. The main difference between a curved and linear relationship is the shape of the graph that represents the relationship between the variables.