STPM Mathematics 954 Practice Questions - Sijil Tinggi Persekolahan Malaysia (STPM) - Mathematics (954) Exam

The function f(x) = 3x + 6 has inverse f^-1(x). What is f^-1(x)?

(x - 6)/3 (x + 6)/3 3x - 6 1/(3x + 6)

Correct Answer:

(x - 6)/3

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