The Function F Is One-To-One $$f ( x ) = - 4 x + 5$$

question 243

Multiple Choice

The function f is one-to-one. State the domain and the range of f and f^-1. Write the domain and range in set-builder
notation.
- $$f ( x ) = - 4 x + 5$$

• A) \( f(x) \) : D is all real numbers, \( R=\{y \mid y>5\} \);
• \( f^{-1}(x) \) : \( D \) is all real numbers, \( R=\{y \mid y<5\} \)
• B) \(f ( x ) : D = \{ x \mid x > - 4 \} , R\) is all real numbers;
• \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) : \mathrm { D } = \{ \mathrm { x } \mid \mathrm { x } < - 4 \} , \mathrm { R }\) is all real numbers
• C) \(f ( x )\) : D is all real numbers, \(R\) is all real numbers;

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