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2 Indifference curves Suppose an individual who derives utility u(x, y) from consuming a units of good X and y units of good Y. Derive the indifference curve for a level of utility U for each of the following utility functions. Draw them in the graph below for a utility level U = 18. (6 Points) (A) u(x, y) = 2x + 3y (B) u(x, y) = min{3x, by} (C) u(x,y) = ry Microeconomics and Game Theory, Christian Thoni, Fall 2022 Page 1 on 4 15 14 13 12 11 10 8 10 11 12 13 14 15