Rajesh walks 2 km to south, then turns northeast, and walks 3 km. Then he turns south and walks 2 kms. Then he turns west and walks 4 kms. Finally, he turns northwest and walks 5 kms. In which direction is he from his starting point?
If a consumer's demand for a good moves in the same direction as the consumer's income, the consumer's demand for that good must be inversely related to the price of the good is called __________.