The Queen.

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Across
  1. 2. Greater than, less than, or equal to
  2. 4. Ax+By=C
  3. 7. Rise over Run
  4. 8. A small number written above a number
  5. 9. Lines that are the same distance apart
  6. 11. Breaking down into simpler factors
  7. 13. Lines that intersect to make a right angle
  8. 14. Square roots, cube roots, etc
Down
  1. 1. Taking one number away from another
  2. 3. y-values
  3. 5. Sequences Consecutive terms are constant
  4. 6. x-values
  5. 9. Expression with variables
  6. 10. Straight line when graphed
  7. 12. Combining two or more numbers