Haleigh and Logans Math Math Mathy Mathematical puzzle

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Across
  1. 2. Liquid chickens
  2. 7. the lowest point
  3. 12. y=x
  4. 14. number in front of variable
  5. 16. x-intercepts
  6. 17. best math teacher ever
  7. 18. 67x^2+41x-21
  8. 19. max and min
Down
  1. 1. the highest exponent of the mathematical equation
  2. 3. letter after negative square root
  3. 4. a slope that's negative
  4. 5. U-shaped function
  5. 6. y=x^3
  6. 8. the highest point
  7. 9. 67x+41
  8. 10. a slope that's positive
  9. 11. 67x^3+41x^2-21x+69
  10. 13. 67x
  11. 14. a number with no variable
  12. 15. y=x^2