Question 963848
First, know the graph of {{{y=x^3}}}.  Typical reference cubic function .  Your example function is just 2 units shifted downward.


{{{y=x^3}}} graph:
{{{graph(300,300,-6,6,-6,6,x^3)}}}


{{{y=x^3-2}}} graph:
{{{graph(300,300,-6,6,-6,6,x^3-2)}}}