Paris math extra credit

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Across
  1. 3. used for x axis
  2. 6. share a number
  3. 8. an equation without equal sign
  4. 10. by itself
  5. 11. used for y axis
  6. 14. horizontal line
  7. 16. get by itself
  8. 17. alongside a variable
  9. 18. all numbers in expression or equation
  10. 19. opposite of subtraction
Down
  1. 1. likely hood of something is
  2. 2. not in a straight line
  3. 4. relationship between values
  4. 5. vertical line
  5. 7. arranged in a straight line
  6. 8. has an equal sign
  7. 9. an answer to an equation problem
  8. 12. same
  9. 13. unknown number
  10. 15. move apart