- When mentioning movement along a demand / supply curve, have to state the words “Expansion” and “Contraction”
- Draw a diagram to analyze the impact on the demand
这里一定不要被题目给骗了！你要体现的不只是demand curve的变化，还有在supply curve不变得情况下，quantity demanded 的变化。
6 An ordinary supply curve is upwards sloping, showing a positive correlation (1) between price and the quantity supplied (1). This is because the law of supply states that at higher prices, firms are more willing and more able to supply (1) at each given price level.
When taking about the shift of curves, remember to write the direction: not inwards and outwards, left or right!
When there is market equilibrium, there is no pressure on the price to change.
Both excess demand / supply and shortage / surplus should be mentioned. Price and quantity should not be labeled as P1, P2, Q1, Q2, and instead as Pe for the equilibrium price, Qe as the equilibrium quantity, Qd for quantity demanded and Qs as quantity supplied.
If the demand is affected due to the substitute compliment issue, the demand / supply changes first. The price does not change first – what is the point of it?
Taxes imposed on suppliers include sales tax.
Reasons for price to fall – increase in supply or decrease in demand.
Conclusion of a discussion problem: Although something … something, something still outweighs something else and ……