Mason and Jamie's Economics Page
  Chapter 4 Econ Summary 
Demand  
Jamie Ramseyer   Mason Elias        Mr. Treadway |Period 3

Overview   Chapter 4 is about demand and how one must be willing and able to buy a good for demand to be present. Also, the law of demand states price of a good increases, then the quantity demanded of a good decreases and vice versa. This law helps to create a demand curve as when price increases, quantity demanded decreases and is represented as a line with a negative slope. This chapter also discusses elasticity of demand and it is represented as percentage change in quantity demanded divide by percentage change in price.

Key Terms
Market- any place where people come together to buy and sell goods or services  

Demand-
the willingness and ability of buyers to purchase different quantities of a good at different prices during a specific time period  

Law of Demand-
a law stating that as the price of a good increases, the quantity demanded of the good decreases, and that as the price of a good decreases, the quantity of the good increases  

Quantity demanded-
the number of units of a good purchased at a specific price  

Law of Diminishing Marginal Utility-
a law stating that as a person consumes additional units of a good, eventually the utility gained from each additional unit of the good decreases  


Demand Schedule-
the numerical representation of the law of demand  

Demand Curve-
the graphical representation of the law of demand  

Normal Good-
a good for which the demand rises as income rises and falls as income falls  

Inferior Good-
a good for which the demand falls as income rises and rises as income falls  

Neutral Good-
a good for which the demand remains unchanged as income rises or falls  

Substitute-
a similar good. With substitutes, the price of one and the demand for the other move in the same direction  

Complement-
a good that is consumed jointly with another good. With complements, the price of one and the demand for the other move in opposite direction  

Elasticity of Demand-
the relationship between the percentage change in quantity demanded and the percentage change in price  

Elastic Demand-
the type of demand that exists when the percentage change in quantity demanded is greater than the percentage change in price  

Inelastic Demand-
the type of demand that exists when the percentage change in quantity demanded is the less than the percentage change in price  

Unit-elastic Demand-
the type of demand that exists when the percentage change in quantity is the same as the percentage change in price    

Comprehension/Critical Thinking and Writing 

  Price                                                                                                            Quantity demanded                                                                       Total Revenue

$0.30                                                                                                                               197                                                                                                       $59.10

$0.50                                                                                                                                153                                                                                                      $76.50

$0.80                                                                                                                                104                                                                                                      $83.20

$1.00                                                                                                                                 66                                                                                                        $66.00

$1.50                                                                                                                                 37                                                                                                        $55.50

$2.00                                                                                                                                 12                                                                                                        $24.00

 

   
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