When a measure of the responsiveness of one variable to other (for example, quantity supplied [or demanded] to changes within price), elasticity: (w) provides no criterion for identifying responsiveness. (x) depends on the units used to express changes within price and quantity demanded or supplied. (y) is independent of how changes within price (for example, dollars or euros) and quantity demanded or supplied (for example, kilotons or ounces) are measured. (z) is constant along each supply curve or demand curve.
Can anybody suggest me the proper explanation for given problem regarding Economics generally?