In the graph to the right, D_I is drawn very steep, to illustrate inelastic demand; while D_E is drawn flatter, to illustrate elastic demand. Notice the effect of a shift from P₁ to P₂ in each case.

   Along D_I quantity demanded drops slightly, from Q₁ to Q₂, consistent with inelastic demand. Along D_E the effect of a price change is much more pronounced. Quantity drops from Q₁ to Q₂, a huge drop, and what we expect from very elastic demand.

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