Movement Along Supply Curve
Developed by
Prof. Avinash Sahu
City Premier College,
Nagpur

introduction
Movement along the supply curve or change in
quantity supplied refers to extension and
contraction of supply of a commodity caused by
change in own price of the commodity.

Movement along supply curve are of
two type:
1) Expansionof supply :
• When price increases, there is an
upward movement (A- A1) along the
supply curve, called extension of
supply, other thing remaining same.

• 2) Contractionof supply
when price decreases, there is
a downward movement (A1-
A) along the supply curve,
called contraction of supply.
Other things remaining same.

Shifts in supply are two type :
• 1) Increase in supply
• When other factors change in
the favorable direction, the
supply curve shifts to the right
showing increase in supply.

2) Decreasein Supply
• When other factors change
in an unfavorable manner,
the supply curve shifts to
the left showing a decrease
in supply.