Question

Distinguish between increase in demand and increase in quantity demanded

Answer 1

in this the price is constant it mean ,if there is increase in increase in the consumer income then due to this the demand of the consumer will also increase on the other hand if there is a decrease in the consumer income then the demands it also decrease. but increase in demand all the determinants like expectation ,taste and preferences, own price of that commodity , substitute goods but the complementary goods are decreased and vice versa

and the quantity demanded means specific commodity can be purchased at specific levels of prices