The law of demand states that when the price of the good falls,
the quantity demanded of the good rises and vice versa, ceteris
paribus. This means theat, other factors affecting demand must not
change and if only the price of the good changes it has an inverse
affect on the quantity demanded. thus, the law of demand
says that, all else equal, when price rise, people buy
less.
When the factors affecting demand other than the price of the
good changes, we see a shift in the demand curve. When there is a
favorable change in the factor affecting deamand of a good (OTHER
THAN THE PRICE OF THE GOOD), there is an increase in the demand of
the good this will shift the demand curve to the right. So
a rightward shift in the demand curve would mean that the people
want to buy more at every price.
The supply curve is upward sloping as there is
a direct relationship between the price of the good and the
quantity supplied. When there is a favorable change in the factors
affecting supply (FACTORS OTHER THAN THE PRICE OF THE GOOD), there
will be an increase in supply and the supply curve will shift to
the right. Thus, a rightward shift in the supply curve
means there is more supplied at every price.
A market equilibrium is achieved at the
intersection of the demand and supply curves. At this point, the
price level is known as the equilibrium price. It is achieved when
the quantity demanded by the consumers equals the quantity supplied
by the producers. Thus, the equilibrium price causes the
amount people want to buy equal the amount people want to
sell.
If the current market price is above the equilibrium, the people
would ant to buy less due to an increased price and the producers
would want to sell more to earn more profits due to the same
reason. thus, the quantity demanded will be less than the quantity
supplied and there will be a situation of
surplus.
Now since there is surplus in the economy, the prices will be
forced too fall until the quantity demanded equals the quantity
supplied and the equilibrium price is reached. Thus, this
will put a downward pressure on prices.