Untitled

Y-axis  
  |  
  | BL1        BL2        BL_comp (Compensated budget line)  
  |           ／│  
  |         ／  │  
  | IC1   ◎ A  │  
  |       ／    ◎ B (Substitution effect)  
  |_____／______│_________ X-axis

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