Algebra Crossword Puzzle

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Across
  1. 3. the horizontal axis
  2. 6. number a real number that is not a rational number
  3. 7. the distance from the origin to the coordinate x
  4. 10. process of dividing
  5. 12. the constant factor of a variable
Down
  1. 1. the vertical axis
  2. 2. a polygon with four sides
  3. 4. process of multiplying
  4. 5. the number that occurs most often in a set of numbers.
  5. 8. process of subtracting
  6. 9. process of adding
  7. 11. the average