Question

If f(x) = 2/3x + 9, find f^-1(x)

Answer 1

Answer:

• Option D

Step-by-step explanation:

Given function:

• f(x) = 2/3x + 9

Find its inverse:

• x = 2/3*f⁻¹(x) + 9
• 2/3*f⁻¹(x) = x - 9
• f⁻¹(x)  = 3/2(x - 9)
• f⁻¹(x) = 3/2x - 27/2

Correct choice is D