Math Chapter Wise The Line And General Equation Of Second Degree And Its Classification English MCQ Rajasthan TGT 2016 Q.If the equation hxy+gx+fy+c=0; h≠0 represents a pair of straight lines, then Afc= gh Bfh=cg Cfh= c2 g2 Dgf=ch Show answer Correct answer: gf=ch