x y jt x y solid red [circle 8] jt 0 0 x y x1 y1 jt x1 y1 color blue [mt x y ] jt 0 0 x y x= unknown Put_Circle 0 (x^2 + 20*x + 4) Put_Line (-200) 110 200 110 jt -180 -20 wr "Find x so that the red circle will be on the blue line" jt 0 1000 return 1 + rnd 4 return 2+rnd 6