Final Project Crossword Puzzle

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Across
  1. 4. The direction and steepness of a line on a graph
  2. 6. a placeholder/symbol that represents an unknown number in an equation
  3. 7. The property that states that problems are mirrored using if and then
  4. 12. There being only one term
  5. 13. The sum of monomial expressions
  6. 16. The property of problems that uses if, and,then
  7. 18. There being only two terms
  8. 19. (0,0)
  9. 20. The property that states that numbers are equal to themselves
Down
  1. 1. The property that states that using the opposite sign to make go equal a beginning number
  2. 2. The highest exponent of polynomial
  3. 3. The property that states that everything stays the same and there can be no change with the answer
  4. 5. Lines that intersect
  5. 8. The property that states that the numbers that are in a group together does not matter
  6. 9. The property that states that the order of numbers is not important, so numbers can be placed anywhere
  7. 10. The property that states that the outside number be multiplied to numbers inside parentheses.
  8. 11. Lines that never intersect
  9. 14. A number that is less than zero (-x)
  10. 15. There being only three terms
  11. 17. The quantity of which an number and or expression is being raised to