Math crossword puzzle

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Across
  1. 2. An expression used to calculate a desired result
  2. 3. x in the expression ax
  3. 6. The set of all real numbers between two given numbers.
  4. 7. The quantity which cancels out the a given quantity.
  5. 11. The number multiplied times a product of variables or powers of variables in a term.
  6. 12. value makes a negative number positive.
  7. 14. Any of the symbols <, >, ≤, or ≥.
  8. 16. Plane The plane formed by a horizontal axis and a vertical axis, often labeled the x-axis and y-axis, respectively.
  9. 19. A polynomial with one term
  10. 23. To figure out or compute.
  11. 24. A quantity that can change or that may take on different values.
  12. 25. numbers All numbers on the number line.
Down
  1. 1. root A nonnegative number that must be multiplied times itself to equal a given number.
  2. 2. A relation for which each element of the domain corresponds to exactly one element of the range.
  3. 4. intercept A point at which a graph intersects the x-axis.
  4. 5. The sum or difference of terms which have variables raised to positive integer powers and which have coefficients that may be real or complex.
  5. 8. The set of y-values of a function or relation.
  6. 9. Two variables are proportional if their ratio is constant.
  7. 10. The result of writing sum of two terms as a difference or vice-versa.
  8. 13. Numbers All positive and negative fractions, including integers and so-called improper fractions.
  9. 15. intercept A point at which a graph intersects the y-axis.
  10. 17. The part left over after long division.
  11. 18. A polynomial with three terms which are not like terms.
  12. 20. The mathematics of working with variables.
  13. 21. The set of values of the independent variable(s) for which a function or relation is defined. Typically, this is the set of x-values that give rise to real y-values.
  14. 22. terms Terms which have the same variables and corresponding powers and/or roots.