Algebra 2 Crossward Puzzle

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Across
  1. 7. Is a mathamatical sentence stating that two mathematical expressions are equal
  2. 9. Are subsets of the rational numbers
  3. 12. Relations that are not linear
  4. 15. To determine whether the relation is a function
  5. 18. Relations that are not linear
  6. 19. Equation that represent functions are often written in
  7. 20. Can be expressed as a ration a/b,
  8. 21. Consist of several different kinds of numbers
Down
  1. 1. has no operations other than addition subtraction and multiplication of a variable by a constant
  2. 2. Each element of the range corresponds to an element of the domain
  3. 3. because its values depend on X
  4. 4. A number that is not a fraction of a number
  5. 5. Often X with values making up the domain
  6. 6. Each element of the domain pairs exactly one unique element of the range
  7. 8. A relation in which the domain is a set of individual points
  8. 10. Each replacement that results in a true sentence
  9. 11. The relation can be graphed with a line or smooth curve
  10. 13. Neither Terminates nor repeates
  11. 14. A mathematical Sentence containing one or more variables
  12. 16. The form that goes Ax+By=C
  13. 17. that is written without decimal and fraction