?? You said P and Q lie on then you say "Find P and Q on the graph of the inverse .

If P= is on then we must have so either p= 0 or , . If it were on , then we would have to have which is only true for p= 0. Since R is not given I see no information derived from "the normals at P and Q intersect at R" except that theydointersect and are not parallel. The only way I could make any sense out of this is to say that P= Q= (0,0).