Question

the income efforts is negative in case of
a) inferior goods
b) normal goods
c) substitute goods​

Answer 1

$\huge \sf{\pink{\fbox{\purple{\fbox{\blue{\fbox{\pink{Aɳʂɯҽɾ}}}}}}}}$

Thus, an income effect is positive in case of normal goods.IE is negative in case of inferior goods (including Giffen goods) where we find inverse relationship between income and quantity demanded.