Algebra crossword puzzle

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Across
  1. 3. substituting numbers or expressions for variables
  2. 5. information arranged in rows and columns
  3. 8. a number or expression that divides another number or expression evenly
  4. 10. an expression with one or more variables
  5. 12. a statement that shows that two expressions are not equal
  6. 13. outputs of a function
  7. 14. a diagram showing the relation of variables
  8. 15. a number representing what power a value is raised to
  9. 18. inputs of a function
  10. 19. a fixed value
Down
  1. 1. change in y values
  2. 2. a polynomial equation where one term is raised to the second power
  3. 4. an expression with three terms
  4. 6. a number used to multiply a variable
  5. 7. an expression that has variable, constants, and exponents
  6. 9. change in x values
  7. 11. rise over run
  8. 15. a statement that shows that two expressions are equal
  9. 16. a location represented by a dot
  10. 17. a method for solving equations that is not substitution