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Functions Worksheet

Recommended for 8th Grade — High School

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Functions Worksheet

Name: ____________________Date: ____________

Instructions: Understanding inputs and outputs, completing function tables, and identifying rules.

20 problems

  1. If f(x) = f(x) = 4x + 9, then f(9) = ______
  2. If f(x) = f(x) = 5x + 0, then f(8) = ______
  3. If f(x) = f(x) = 4x + 2, then f(6) = ______
  4. If f(x) = f(x) = 7x − 7, then f(2) = ______
  5. If f(x) = f(x) = 2x − 6, then f(9) = ______
  6. If f(x) = f(x) = 9x − 9, then f(9) = ______
  7. If f(x) = f(x) = 8x + 7, then f(3) = ______
  8. If f(x) = f(x) = 9x − 8, then f(5) = ______
  9. If f(x) = f(x) = 8x + 2, then f(2) = ______
  10. If f(x) = f(x) = 5x + 5, then f(5) = ______
  11. If f(x) = f(x) = 2x + 4, then f(2) = ______
  12. If f(x) = f(x) = 9x + 2, then f(5) = ______
  13. If f(x) = f(x) = 2x + 5, then f(9) = ______
  14. If f(x) = f(x) = 5x + 6, then f(8) = ______
  15. If f(x) = f(x) = 5x + 8, then f(2) = ______
  16. If f(x) = f(x) = 9x + 6, then f(8) = ______
  17. If f(x) = f(x) = 9x − 1, then f(7) = ______
  18. If f(x) = f(x) = 9x + 1, then f(3) = ______
  19. If f(x) = f(x) = 5x − 1, then f(2) = ______
  20. If f(x) = f(x) = 6x − 1, then f(2) = ______
Functions Worksheet — Free Printable with Answer Key | WaffleMath