Math crossword

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Across
  1. 2. x intercept
  2. 4. solution
  3. 7. x
  4. 8. y intercept
  5. 11. input
  6. 13. vertical line on graph
  7. 14. y
  8. 15. output
Down
  1. 1. input-output
  2. 3. horizontal line on graph
  3. 5. rise/run
  4. 6. roots
  5. 9. same slope never crosses
  6. 10. 2(x-3)
  7. 12. curve graph