Consider a consumer with preferences defined over x and y.

a. Consider a consumer with preferences defined over x and y. Is it possible that they would choose to consume some of both commodities when their income is I but would choose to consume only x when their income is I’ > I? If so, depict such a case. Otherwise, explain why not.

b. Conversely, is it possible that they would choose to consume only x when their income is I but would choose to consume x and y when their income is I’ > I? If so, depict such a case. Otherwise, explain why not.