Which of the following may be determined from an individual's demand curve for a good?

i. the quantity demanded at a given price, holding all other factors constant.

ii. the total expenditures on the good at a given price, holding all other factors constant.

iii. how the quantity demanded changes if the price of the good changes, holding all other factors constant.

All the above three is correct.

The individual demand curve shows the quantity demanded at a given price, holding all other factors constant, other factors means income, preference, fashion, the price of related goods.

The total expenditure on the good at a given price, holding all other factors constant. Total expenditure means the total expense occurs in demanding the quantity with the given prices.

Demand curve also determined that how the quantity demanded changes if the price of the good changes, holding all other factors constant. There will be movement along the demand curve when the price changes and keeping the other factors constant.

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