The vector 
in the diagram is equal to: 
Definitions:
Inverse Demand Function
A representation of demand that expresses price as a function of quantity, rather than the conventional demand function which expresses quantity demanded as a function of price.
Price Elasticity
Measures the responsiveness of quantity demanded or supplied to a change in price.
Wealth
The abundance of valuable resources or valuable material possessions, including the total of all financial assets minus any liabilities.
Price Elasticity
A measure in economics that shows how the quantity demanded of a good or service responds to a change in its price.
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