Vocabulary Review

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Across
  1. 3. a letter that represents a number
  2. 4. a set of numbers in the form (x,y)
  3. 6. the vertical axis
  4. 9. x+y=y+x is an example of this property
  5. 12. x(y+z)=xy+xz
  6. 16. the intersection of two number lines
  7. 17. the set of all of the first numbers in a set of ordered pairs
  8. 18. the set of all of the second numbers in a set of ordered pairs
  9. 19. the set of natural numbers and zero
Down
  1. 1. the set of counting numbers
  2. 2. the vertical placement of an ordered pair
  3. 5. x(yz)=(xy)z is an example of this property
  4. 7. the horizontal axis
  5. 8. any number that cannot be written as a ratio of two numbers
  6. 10. the point where the xaxis and yaxis intersect
  7. 11. x+0=x is an example of this property
  8. 13. whole numbers and their opposites
  9. 14. the horizontal placement of an ordered pair
  10. 15. any number that can be written as a ratio of two numbers