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.
1 Perfectly inelasticity of demand is seen in the demand of necessary goods, while relative inelasticity is seen in case of very expensive goods. 2  The coefficient of elasticity of demand is less than 1, that is ed. 3  By this explanation we have completed the differences between Elastic and Inelastic demand. 4  Thank you.