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The inverse function f(x) = 3x + 4 is

Mathematics
JAMB 2002

The inverse function f(x) = 3x + 4 is

  • A. (x-4)/3
  • B. (x-5)/5
  • C. (x+3)/4
  • D. (x+4)/3
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Correct Answer: Option A
Explanation

Let y = f(x).

\(y = 3x + 4 \implies x = \frac{y - 4}{3}\)

Replace y with x.

\(y = \frac{x - 4}{3} \)

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC offline past questions - with all answers and explanations in one app - Download for free
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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