A perfectly elastic price-demand curve is parallel to the X - axis. Why or why not ?
A perfectly elastic demand curve is parallel to the X - axis because the buyers are willing to buy any quantity of the good at a given price.
Show with the help of a diagram, the effect on equilibrium price and quantity when: (i) Demand is perfectly elastic and supply decreases. (ii) Supply is perfectly inelastic and demand increases. (iii) The demand curve is perfectly elastic and the supply curve shifts outwards.