Chapter 4.4, Problem 44AYU

In Problems 33-44, (a) graph the rational function using transformations, (b) use the final graph to find the domain and range, and (c) use the final graph to list any vertical, horizontal, or oblique asymptotes.

$R\left(x\right)\text{ = }\frac{x-\text{ 4}}{x}$

To determine

To find:

a.Graph the rational function using transformations,

Answer to Problem 44AYU

a.$y=\frac{1}{x}$

$y=\frac{4}{x}$

$y=1-\frac{4}{x}$ (Reflection in the $y\text{-axis}$ and vertical translation at 1)

Explanation of Solution

Given:

$R\left(x\right)=\frac{x-4}{x}=1-\frac{4}{x}$

To determine

To find:

b.Use the final graph to find the domain and range, and

Answer to Problem 44AYU

b.The domain is $\left\{x|x\ne 1\right\}$ and range is $\left\{y|y\ne 1\right\}$.

Explanation of Solution

Given:

$R\left(x\right)=\frac{x-4}{x}=1-\frac{4}{x}$

To determine

To find:

c.Use the final graph to list any vertical, horizontal, or oblique asymptotes.

Answer to Problem 44AYU

c.Horizontal asymptotes: $y=1$.

Vertical asymptotes $x=1$.

Oblique asymptotes: None.

Explanation of Solution

Given:

$R\left(x\right)=\frac{x-4}{x}=1-\frac{4}{x}$