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Match the graphs to their equations

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  1. 12-1-2-3-4-5-6123456789-1-2-3-4-5-6-7-8-9-10-11
  2. 12345678-1-2-3-4-5-6-7-8-9-10-11-12123-1-2-3-4-5
  3. 123456789101112-1-2-3-4-5-6-7-812345-1-2-3
  4. 123456-1-21234567891011-1-2-3-4-5-6-7-8-9