With the use of diagram differentiate between change in demand and change in quantity demanded

Changes in demand are those that occur due to price while everything else is held constant. These changes are represented by a movement along the demand curve.

Changes in quantity demanded are those that occur due to factors other than price, for example: variations in consumers preferences, seasonality of goods, or income rises. These changes are represented by a shift of the demand curve, either to the right, representing more quantity demanded at any given price, or shifts to the left, representing less quantity demanded at any given price.

this business is a price setter.

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