Yes, sorry, i meant 1994.
Hmm. yes, after once more considering, I think the solution given by Success One may be correct.
I did it by assuming that the locus would be a line with a gradient half that of 3x + 4y -18=0.
So I used the equation
3x + 4y -18 +k(y-3)=0
3x + y(4+k) -18 -...