How do you tell if a function is quadratic or linear
Describing function as linear or quadratic:
Linear functions are usually represented by a general equation as where is the slope and is the -intercept. The graph of linear function will always be a straight line.
Whereas, the quadratic functions are represented as , . The graph of quadratic functions is a curve.
Hence, we can tell if a function is linear or quadratic by its equation and graph.