Payton and Lydia's Puzzle

123456789101112131415161718
Across
  1. 1. i
  2. 4. y=mx
  3. 5. Meow
  4. 8. Factor before X
  5. 11. Not linear
  6. 13. Expression with two term that aren't like terms
  7. 14. Expression with one term
  8. 15. Ruf
  9. 16. Exponent in a polynomia
  10. 17. Going up
  11. 18. (y=mx)+b
Down
  1. 2. Local Low point
  2. 3. Local high point
  3. 5. Does not vary
  4. 6. Expression with three terms
  5. 7. Expression with infinite terms
  6. 9. Maxes and mins
  7. 10. Three
  8. 12. Graph with a constant slope
  9. 15. Going down