I need Geometry help...(Distance and Midpoints)

Hello! I'm new to this forum. I'm specifically here to get some answers out of these eaaasy geometry problems. I'm assuming these problems will be easy from you guys, considering some of the mathematics you guys discuss here. See I didn't have enough time to write my notes down last Friday, so I'm a bit stumped as to what to do.

Anyways....here it goes...

** Find the coordinates of the missing endpoint given that S is the midpoint of RT.**

43. T(-4,3), S(-1,5)

44. T(2,8), S(-2, 2)

54. In the figure, GE bisects BC, and GF bisects AB. GE is a horizontal segment and GF is a vertical segment.

a. Find the coordinates of points F and E.

b. Name the coordinates of G and explain how you calculated them.

c. Describe what relationship, if any, exists between DG and GB. Explain.

Well, that's all, folks! I finished the other problems last night. I'll be waiting around here for answers , so thanks in advance,