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Find a value of an inverse function

Year 12 maths · Fieldbook Learning

Name ______________________ Date __________

Find the x that gives the value c.

  1. f(x) = −5x − 3. Find f⁻¹(−3).
  2. f(x) = 4x + 2. Find f⁻¹(18).
  3. f(x) = 5x + 7. Find f⁻¹(52).
  4. f(x) = −x + 3. Find f⁻¹(5).
  5. f(x) = 3x + 3. Find f⁻¹(24).
  6. f(x) = x − 6. Find f⁻¹(−13).
  7. f(x) = −6x + 1. Find f⁻¹(−29).
  8. f(x) = −6x + 4. Find f⁻¹(−50).
  9. f(x) = −6x − 7. Find f⁻¹(−55).
  10. f(x) = 3x + 9. Find f⁻¹(18).
  11. f(x) = −2x + 4. Find f⁻¹(−6).
  12. f(x) = 2x + 8. Find f⁻¹(22).
  13. f(x) = x − 4. Find f⁻¹(−9).
  14. f(x) = 2x + 3. Find f⁻¹(−7).
  15. f(x) = x + 5. Find f⁻¹(13).
  16. f(x) = 3x − 2. Find f⁻¹(−20).
  17. f(x) = −3x − 4. Find f⁻¹(−1).
  18. f(x) = 5x − 7. Find f⁻¹(−37).
  19. f(x) = −3x + 1. Find f⁻¹(−17).
  20. f(x) = x + 3. Find f⁻¹(−6).
More free practice: fieldbooklearning.com/uk/practice/year-12/inverse-function-values/

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Answer key: Find a value of an inverse function

  1. 0
  2. 4
  3. 9
  4. -2
  5. 7
  6. -7
  7. 5
  8. 9
  9. 8
  10. 3
  11. 5
  12. 7
  13. -5
  14. -5
  15. 8
  16. -6
  17. -1
  18. -6
  19. 6
  20. -9