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.
This type of elasticity is used as a measure of relative changes in quantity demand due to relative changes in commodity prices when all the other factors are held constant. The other types of elasticity of demand are income elasticity of demand and cross price elasticity of demand.his type of elasticity is used as a measure of relative changes in quantity demand due to relative changes in commodity prices when all the other factors are held constant. The other types of elasticity of demand are income elasticity of demand and cross price elasticity of demand.