Only the circled questions

2.2 4. The formula for the curved area, A, of a cylinder with height h and radius r is A = 2rrh. a) Solve the formula for r. b) Determine the radius of a cylinder with curved area 24.0 cm and height 2.0 cm. 2.3 5. Determine the slope and y-intercept of each line. a) y = 3x + 4 b) y = =x + 1 cy = -2x - 3 d) y = -2 e) 2r + 3y = 6 f) 5x - 2y = 7 6. Graph each line in exercise 5. 7. Graph each line. a) .x + 2y - 4 = 0 b) 5x - 10y = 20 c) 3y + 2x - 6 =0 d) 4x - 5y = 20 e) 4y + 3x = 12 f) 2x - y = 2 2.4 8, Solve graphically. a) y = x + 4 b) 2x+ y = -1 c) 2x + 31 = 6 y = -2x + 1 y - x = 2 x - y = -2 2.5 9. Solve by substitution. a) y = -2x - 3 b) 2 x t y = 6 c) x + 3v = 3 y = 3x - 11 -3x + 2y = 5 2x - y = -8 10, Solve by elimination. a) x + y = ll b) x - 2y = 8 c) 3x + 5y = 27 x-y =-3 3.x + 4y = -6 4x + 2y = 8