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Reviewed CSCA Mathematics question · Standard

If f(x) = 2x − 5, what is f⁻¹(x)?

  1. (x − 5) / 2
  2. (x + 5) / 2
  3. 2x + 5
  4. 5 − 2x
Show the answer and explanation

Correct answer

B. (x + 5) / 2

Why this answer is correct

Swap x and y, then solve x = 2y − 5 for y.

This published item includes a stored explanation and passed the platform’s publication workflow. It is independent preparation material, not a claim of an official or recalled examination question.

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