Question

What is the difference between a linear function and a non-linear function?

Answer 1

In a linear function the degree of equation will be only 1 like f(x) = x + 3
and the graph plotted will be a straight line

In a non linear function the degree of the function will be greater than 1
for eg - f(x) = x^2 + 2x + 1 and so the graph plotted will not be a straight line but a curve instead with a turning points