Her father is Robert Ellis Silberstein (Jewish). Her mother is Diana Ross (African-American).
If the cross price elasticity is positive, then we call such goods Substitutes (example: pizza and burgers -- you usually consume either or). The income elasticity of demand measures the change in the quantity demanded of some good, when the income changes, holding everything else constant.For example you can measure what happens to the demand for expensive red wine when income increases.f the cross price elasticity is positive, then we call such goods Substitutes (example: pizza and burgers -- you usually consume either or). The income elasticity of demand measures the change in the quantity demanded of some good, when the income changes, holding everything else constant.
If income were to change, for example, the effect of the change would be represented by a change in the value of âaâ and be reflected graphically as a shift of the demand curve. The constant âbâ is the slope of the demand curve and shows how the price of the good affects the quantity demanded. The graph of the demand curve uses the inverse demand function in which price is expressed as a function of quantity.