ECON 1 Lecture 13: ECON 1-Lecture 12-Budget Constraints
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Equation: burgers + tacos = . On the line: spend maximum of . Below the line: spend less than . Slope = -0. 5 = -0. 5 px/py = - (price of tacos) / (price of burgers) For each burger don"t consume, can consumer 2 more tacos. Negative: lower one consumption --> increase another consumption. Utility function: assign a number to each bundle --> compare bundles. U(3,2) > u(4,2) --> prefer (3,5) to (4,2) A happy medium: u(2,7) = u(1,12) --> willing to trade 5 burgers for 1 taco. Marginal utility of burgers --> increase for one more burger. Burgers give up to give up one more taco = (mu tacos) / (mu burgers) = Diminishing marginal utility: the more consumed, the less marginal utility. Budget constraint: different combinations of goods and services that consumers can afford with limited budget. Budget line: a graphical representation of budget constraint --> border between those affordable and not.