Math Criss-Cross Puzzle

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Across
  1. 3. To write a trinomial as a product of binomials
  2. 5. The opposite of a number
  3. 8. Slopes are the same
  4. 10. Inequalities Two simple inequalities joined by 'and' or 'or'
  5. 13. The number of numbers that occur the most
  6. 14. Output value
  7. 15. Division Use the coefficient of a quotient to divide a polynomial
  8. 16. Value of the variable that makes the inequality true numbers
  9. 19. A letter represent one or more numbers
  10. 20. ax+bx+c+0
  11. 21. The middle number divided the total number are written in order
Down
  1. 1. Y=mx+b
  2. 2. The distance the number is from 0 on a numberline
  3. 4. The sum of numbers divided the total number of number
  4. 6. The number in a power that represents the number of times the base is used as a a factor
  5. 7. Rise over run
  6. 9. Slopes are negative reciprocals of each other
  7. 10. Number that corresponds to a point
  8. 11. Is an expression that has only one term
  9. 12. A mapping or pairing of input values with output values
  10. 17. Maps the output values back to their original input value
  11. 18. Represented by a combo of equation,each corresponding to a part of the domain