y² = 2x You didn't give any instruction, so I can only guess what you are supposed to do. I'll guess that you are supposed to graph it. If I guessed wrong, then post again and give the instructions. Get some points x y -------- 0 | 0 2 | ±2 8 | ±4 18 | ±8 Plot (0,0), (2,2), (2,-2), (8,4), (8,-4), (18,8), (18,-8)Edwin