| Giver | Post | Date |
| Jakelong | Re: GRE Math Challenge #98- In the rectangular coordinate system | 31-Aug-2023 |
| Rehmat340 | Re: GRE Math Challenge #98- In the rectangular coordinate system | 25-Feb-2021 |
| Carcass | Re: GRE Math Challenge #98- In the rectangular coordinate system | 20-Feb-2020 |
| sandy | Re: GRE Math Challenge #98- In the rectangular coordinate system | 12-Mar-2018 |