Suppose a low-income family that earns K750 per month consumes 8 Kgs of Hamburgers and 2 Kgs of Beef in Month 1. However, in month 2 when the income of the family rises to K950, the quantity of Hamburgers consumed by the family reduces to 5 Kgs while the quantity of Beef increases to 4Kgs.

Exercise A1 Name three kinds of graphs and briefly state when is most appropriate to use each type of graph.

Recent research confirms that the demand for cigarettes is not only inelastic, but it also indicates that smokers with incomes in the lower half of all incomes respond to a given price increase by reducing their purchases by amounts that are more than four times as large as the purchase reductions made by smokers in the upper half of all incomes. How can the income and substitution effects of a price change help explain this finding?

Income Effects depend on the income elasticity of demand for each good limit you buy. If one of the goods you buy has a negative income elasticity, that is, it is an inferior good, what must be true of the income elasticity of the other good you buy?