To represent the point (-7, -10), we typically look for a coordinate plane where the x-coordinate is -7 and the y-coordinate is -10. Since I do not see the reference for points A, B, C, D, or E given in your message, I'm unable to directly determine which letter represents that specific point.
If you could provide additional context or the coordinates for points A through E, I would be able to help you find which letter corresponds to the point (-7, -10).