Line l_1 has equation 3x - 2y = 1 and goes through A = (-1, -2). Line l_2 has equation y = 1 and meets line l_1 at point B. Line l_3 has positive slope, goes through point A, and meets l_2 at point C. The area of triangle ABC is 3. What is the slope of l_3?

Guest Nov 24, 2019