Math Chapter Wise The Line And General Equation Of Second Degree And Its Classification English MCQ PGT 2004, 2011 Q.The equation ax2 +by2 +cx+cy=0, c≠0 represents a pair of straight lines is; Aa+b = 0 Ba+c=0 Cb+c= 0 DNone of these Show answer Correct answer: a+b = 0