Inactive Tutor answered 05/24/13
CRystal,
What you have posted "(5,1),(t,-12)" is a set of grid coordinates. (5,1) represents one the location of one point on a grid, and (7,-12) represents the location of another point on a grid. There are several thing that you can do with these two known grid points, but your question doesn't indicate what you are supposed to do with these coordinates.
Robert