Q80. What is the equation of the tangent to the ellipse x2 + 9y2 = 225 at the point (9, 4)?Mathematics — NUST Mock By Dogers 6 — Question 80 of 200A. x + 4y = 25B. x + y = 13C. x - 4y = 25D. x + 4y = 5Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →