In November 2002, the Secretary for Housing, Planning and Lands, Mr Michael Suen, announced a package of none measures to stabilise the property market. Two of these measures were the 'indefinite cessation of sale of Home Ownership Scheme flats' and 'halting of land auctions'.
(a) Suppose the supply of private housing is fixed. With the aid of a supply-demand diagram, explain how the 'halting of land auctions' affects the price of private housing.