Question 939366
{{{x^2+2y =9}}}
    move x^2 to the right
 {{{ 2y =9-x^2}}}
  divide with 2 on both sides
 {{{  2y/2 = (9-x^2)/2}}}
       {{{ y= (9-x^2)/2}}}
 Required function : {{{ y= (9-x^2)/2}}}