Algebra Crossword Puzzle

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Across
  1. 2. The difference between the largest and smallest numbers in a set of terms.
  2. 6. A direct relationship.
  3. 8. An expression that uses 2 or more symbols.
  4. 9. The middle number in a set of numbers.
  5. 11. Terms in which the variables and exponents are the same.
  6. 13. Set of possible inputs, x-axis.
  7. 14. Not a direct relationship.
  8. 15. Set of possible outputs, y-axis.
Down
  1. 1. A number that divides an expression equally.
  2. 3. Solving a system of simultaneous equations by removing the variables.
  3. 4. A non-zero number raised to the power of 0 = 1.
  4. 5. An expression that uses a root.
  5. 7. A rule written with mathematical symbols.
  6. 9. The number that appears the most in a set of numbers.
  7. 10. An expression that uses 3 or more symbols.
  8. 12. (y-y1) = m(x-x1)