Exercise 8.1

116 9 x y+ = .

14 9 x y+ = . Choose the correct answer in the following Exercises 3 and 4.

Area lying in the first quadrant and bounded by the circle x2 + y2 = 4 and the lines x = 0 and x = 2 is (A) π (B) 2 / π (C) 3 / π (D) 4 π

Area of the region bounded by the curve y2 = 4x, y-axis and the line y = 3 is (A) 2 (B) 9 / 4 (C) 9 / 3 (D) 9