Use a Graphing Calculator to Graph the Function Using the Given

Use a graphing calculator to graph the function using the given viewing window. Use the graph to decide if the function is one-to-one. If the function is one-to-one, give the equation of the inverse function.
- $$f ( x ) = \frac { x + 1 } { x - 4 } ; [ - 10,10 ] \text { by } [ - 10,10 ]$$

A) one-to-one; $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 4 \mathrm { x } - 1 } { \mathrm { x } + 1 }$
B) not one-to-one
C) one-to-one; $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { \mathrm { x } - 4 } { \mathrm { x } + 1 }$
D) one-to-one; $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 4 \mathrm { x } + 1 } { \mathrm { x } - 1 }$

Correct Answer:

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