\[y = x²\]
\[x = - 3:\]
\[y = ( - 3)^{2} = 3^{2} = 9.\]
\[x = 0:\]
\[y = 0^{2} = 0.\]
\[x = 3:\]
\[y = 3^{2} = 9.\]
\[x = 4,5:\]
\[y = (4,5)^{2} = 20,25.\]