A simple linear demand function may be stated as Q = a - bP +cI where Q is quantity demanded, P is the product price, and I is consumerincome. To compute an appropriate value for c, we can use observed values for Q and I and then setthe estimated income elasticity of demand equal to:
c(I/Q)
c(Q/I)
-b(I/Q)
Q/(cI)
答案: c(I/Q)