Algebra Crossword

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Across
  1. 3. a set of values that a function can take
  2. 6. mathematical relationship between expressions
  3. 8. gradient of a graph at any point
  4. 9. number greater than zero
  5. 10. mark or sign that represents something else
  6. 13. root number that produces a specific quantity when multiplied by itself
  7. 15. number in front of a variable
  8. 16. placeholder in an expression
  9. 19. mathematical statement containing equal
Down
  1. 1. number less than zero
  2. 2. number that divides that number exactly
  3. 4. fixed quantity that doesn't change
  4. 5. study of generalized arithmetic
  5. 7. power that a number is raised to
  6. 8. to decipher a problem
  7. 11. the set of possible values of the variables of a function
  8. 12. related to something else by the process of inversion
  9. 14. of a root of a number or quantity
  10. 17. a whole number
  11. 18. continuous extent of length without breadth