Sangeetha Pulapaka
0

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

http://www.twinsburg.k12.oh.us/Downloads/9-4%20Notes.pdf