Question 135299
Given : {{{y = x^2 -2}}}
x  y
______
-2  {{{y = x^2 -2}}} = {{{y = (-2)^2 -2}}}= {{{y = 4 -2}}} = {{{2}}}
-1  {{{y = x^2 -2}}} = {{{y = (-1)^2 -2}}}= {{{y = 1 -2}}} = {{{-1}}}
 0   {{{y = x^2 -2}}} = {{{y = (0)^2 -2}}}= {{{y = 0 -2}}} = {{{-2}}}
 1   {{{y = x^2 -2}}} = {{{y = (1)^2 -2}}}= {{{y = 1 -2}}} = {{{-1}}}
 2   {{{y = x^2 -2}}} = {{{y = (2)^2 -2}}}= {{{y = 4 -2}}} = {{{2}}}

You can graph it.