functions - linear - How to identify a function is linear, quadratic or exponential from graphs?

Sangeetha Pulapaka (last edited 2 years ago) (Expert, Educator @Qalaxia)

The graph of a linear function is a straight line

So, if the graph of a function is a straight line, we have a linear functtion

The graph of a quadratic function is a parabola

So, if the graph of the given function is a U-Shaped curve, the given function is a quadratic function

The graph of an exponential function rises or falls quickly in one direction.

So, if the graph of the given function rises very quickly or goes down slowly, the given function is an exponential one.

More information on graphs of linear, quadratic and exponential functions