Question 6571
right then, {{{y=(x-3)^2-3}}} is a u-shaped curve.


When x=0, {{{y=(-3)^2 - 3}}}  --> y=9-3 --> y=6


When y=0, {{{(x-3)^2 - 3 = 0}}}

{{{(x-3)^2 = 3}}}
x-3 = +- {{{sqrt(3)}}}

so either x = {{{3+sqrt(3)}}}
or x = {{{3-sqrt(3)}}}


this gives you enough info to sketch the curve.


If you want to PLOT it properly, then pick various x values and find the y-values then plot them.


jon.