Functions Puzzle

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Across
  1. 3. the set of inputs in a function
  2. 5. f(x) = -2x; f(-4)
  3. 8. f(x) = 6x - 20; f(5)
  4. 10. f(x) = -x + 20; f(32)
  5. 12. f(x) = x - 4; f(2)
  6. 13. f(x) = 2x + 21; f(1)
  7. 14. f(x)= 4x -1; f(4)
  8. 15. f(x) = -10x -1; f(-2)
  9. 16. the set of outputs in a function
Down
  1. 1. f(x) = -7x; f(-2)
  2. 2. f(x) = 5x - 10; f(10)
  3. 4. f(x) = -3x + 10; f(5)
  4. 6. f(x) = -5x + 2; f(-3)
  5. 7. f(x) = -4x + 15; f(4)
  6. 9. f(x) = -4x - 1; f(-3)
  7. 11. f(x) = 5x - 10; f(6)