Math Crossword

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Across
  1. 4. The horizontal axis on a coordinate plane.
  2. 5. Numbers from least to greatest
  3. 6. This is used for an unknown value.
  4. 9. The rate of change
  5. 12. A statement that the values of two mathematical expressions are equal
  6. 13. You add this to your total to reward a service
  7. 14. The amount of space covering the outside of a 3-D shape.
  8. 15. Saving money
  9. 16. Numbers in order from greatest to least
  10. 19. The amount of space that a substance or object takes up.
  11. 20. (0,0)
Down
  1. 1. Half of the diameter
  2. 2. Where a line crosses the y-axis
  3. 3. Your new total after the discount is applied
  4. 7. The distance from zero.
  5. 8. A whole number that is either positive or negative.
  6. 10. A solution is not included in a solution set.
  7. 11. The vertical axis on a coordinate plane.
  8. 17. The relation between two expressions that are not equal.
  9. 18. A solution is included in the solution set
  10. 21. Rise over ______