UNDERSTANDING
Economic
S y s t e m s
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Supply&
Part5:
Demand
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The market economy is based on the
principles of supply and demand.
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DemandThe quantity of goods or services that consumers are
willing and able to buy.
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SupplyThe quantity of goods or services that businesses are
willing and able to provide.
SupplyGraph
Quantity
Price
The Supply
Curve on a
graph is
ascending.
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LawofSupply
As the price of a good decreases, the supply of that
good will decrease.
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DemandGraph
The Demand
Curve on a
graph is
descending.
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Quantity
Price
LawofDemand
As the price of a good decreases, the demand of
that good will increase.
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Equilibrium
Where the
two curves
meet, is the
equilibrium
point.
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Quantity
Price
Surplus
When there is
more supply,
than quantity
demanded, a
surplus is
created.
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Quantity
Price
Shortage
When there is
less supply,
than quantity
demanded, a
shortage is
created.
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Quantity
Price

Understanding Economic Systems - Supply and Demand