Algebra Crossword Puzzle

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Across
  1. 5. a symbol and placeholder for a quantity that may change
  2. 7. a constant factor of a monomial
  3. 10. a number on its own
  4. 11. the sum of a set of numbers divided by the number of numbers in the set
  5. 12. a plane curve approximately U-shaped
  6. 14. the vertical axis.
  7. 15. a polynomial with two terms
  8. 17. numbers grouped together that show the value of something
  9. 18. an expression that uses a root
  10. 19. the horizontal axis.
  11. 20. number that indicates its base is raised to a certain power
Down
  1. 1. lines that never touch
  2. 2. formula that connects two expressions with an equal sign
  3. 3. lines that cross
  4. 4. an integer that may be multiplied by some integer to produce another number
  5. 6. a two-dimensional plane formed by the intersection of the x-axis and the y-axis
  6. 8. pair of numbers that identifies the location of a particular point on a graph
  7. 9. an expression of more than two algebraic terms
  8. 13. the middle number in a set of numbers arranged in order
  9. 16. the point of intersection of the coordinate axes designated at (0,0)