Q82. If x2 + y2 + ax + by + 9 = 0 represents a circle with its center at (1, -3), what are the values of a and b?Mathematics — NUST Mock 7 — Question 82 of 200A. a = 2, b = 4B. a = -2, b = 6C. a = -3, b = -4D. a = 3, b = -6Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →