1 a. The elasticity of demand for Dy between points a and bis 1.80. Given the shift in demand, the elasticity between points a' and b'in Figure a =[ b. The elasticity of demand for D2 between points c and dis 0.56. Given the shift in demand, the elasticity between points c'and d'in Figure b=[ c. In terms of the midpoint formula, what explains the change in elasticities? Compare the elasticities in this problem to those found in the original demand curves. If we compare the elasticities, we can see that an increase in quantity at every price (Click to select the elasticity. The percentage change in quantity is ((Click to select)) given the higher quantity purchased at every price.