Point D is at (1,5) and point G is at (13,-1). If O is on the segment DG, and DO is twice as long as OG, what are the coordinates of O? Answer should be in form (X, Y) with no space.

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?