State ‘supply curve’. Explain it using an example. Apply it to another unit.
P. 293
Go to page 293 of the activity book to practise more questions on drawing supply curves.
Change in Supply Factors
We have already examined that when price increases, the quantity supplied increases. These changes in price and the subsequent changes in quantity supplied are known as movements along the supply curve.
We will now look at other factors which influence a shift in the supply curve (curve moves left or right).
3.1 Supply curve shifts to the right Increase in supply, price remains the same.
In the diagram below, the supply curve has shifted right from S1 to S2. Price has remained at €50 but quantity supplied has increased from 100 units to 200 units.
This might be caused by the following:
• Cost of production: The cost of making the product or providing the service may have decreased, which means the good/service is more profitable at the same price. The supplier will supply more of it. Example: The price of flour has decreased. Deirdre will now produce more doughnuts and increase supply.
• New technology: Improved production methods such as computer-aided design (CAD) and computer
Price €
50
Shift in Supply Curve – Increase in Supply
S1 S2
0
100
200
Quantity
aided-manufacturing (CAM) lead to products being produced quicker and cheaper. Example: Deirdre invested in a new oven with built-in technology that uses the exact amount of heat required. Deirdre will supply more doughnuts because of the savings she makes in producing her doughnuts.
• Unplanned factors: Good weather may result in some crops growing faster so the farmers will sell more of their crops. Example: Good weather has led to an increase in the growth of wheat (made into flour) and so Deirdre can increase the supply of doughnuts.