You have posted a large number of problems, all connected to the slope of a line. Do you know the definition of "slope"?
Suppose the points O(0,0), D(q,r), and E(s,t) are three noncollinear points. Find the coordinates of the given point.
14. F, given that OD || EF and DF || OE
15. G, given that ED || GO and EG || DO
16. H, given that DH || EO and OH || ED