INDIFFERENCE CURVES AND BUDGET LINES
An indifference curve is a line showing all the combinations of two goods which give a consumer equal utility. In other words, the consumer would be indifferent to these different combinations. Choice of goods with give consumers the same utility APPLES BANANAS 22 17 14 20 10 26 9 41 7 80 Table plotted as indifference curve Diminishing marginal utility The indifference curve is convex because of diminishing marginal utility . When you have a certain number of bananas – that is all you want to eat in a week. Extra bananas give very little utility, so you would give up a lot of bananas to get something else. Indifference curve map We can also show different indifference curves. All choices on I2 give the same utility. But, it will be a higher net utility than indifference curve I1. I4 gives the highest net utility. Basically, I4 would require higher income than I1. Budget line A budget line shows the combination of goods that can be afforded with yo...