If $f:IR \to IR$ is defined by $f(x) = 3x - 4$, then ${f^{ - 1}}:IR \to IR$ is
If $f:IR \to IR$ is defined by $f(x) = 3x - 4$, then ${f^{ - 1}}:IR \to IR$ is
- A
$4 - 3x$
- B
$\frac{{x + 4}}{3}$
- C
$\frac{1}{{3x - 4}}$
- D
$\frac{3}{{x + 4}}$
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