Math Chapter Wise Tangent, Normal, Increasing, Decreasing And Maxima/Minima Of A Function Of One Variable English MCQ UP PGT 2021 Q.The line y = mx + 1 is a tangent to the parabola y2 = 4x, if Am = 1 Bm = 2 Cm = –1 Dm = –2 Show answer Correct answer: m = 1