Math Chapter Wise Tangent, Normal, Increasing, Decreasing And Maxima/Minima Of A Function Of One Variable English MCQ PGT 2005 Q.The normal to the curve x2 – xy + y2 = 7 at the point (–1,2) is A5y=4x+14 B4y=5x+3 C5y+4x=14 D4y+5x=3 Show answer Correct answer: 4y+5x=3