Deriving the Demand Curve: What is Budget constraint : The marginal rate of substitution Meanings : Graphical Representation Of Demand
The consumers will tend to consume a combination of products such that the marginal utility per dollar spent on each product is the same. The slope of the budget constraint called the price ratio is the price of the product on the horizontal axis divided by the price of the product. On the vertical axis the price ratio describes the rate in which one can trade off beer for pizza and keep total expense constant. For example suppose price of beer is $1 in the price of a slice of pizza is $2 the price ratio is the price of Pizza divided by the price of beer or 2/1 or 2. A price ratio of 2 means that you could exchange two beers for one pizza and your total expense would not change. For example suppose you have 10 beers and 10 pizzas your total expenses 30 dollars. If you exchange two beers for one Pizza you're left with eight beers and 11 pizzas your total expenses now eight beers times $1 plus 11 pizzas times two dollars a pizza or $30. As long as you exchange b...