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e. \( y=\frac{1}{x}+3 \)

Ask by Ellis Mullins. in the United States
Mar 15,2025

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Answer

The function \( y=\frac{1}{x}+3 \) is the graph of \( y=\frac{1}{x} \) shifted upward by 3 units. The vertical asymptote remains at \( x=0 \), and the horizontal asymptote is now \( y=3 \).

Solution

1. **Identify the parent function:** The function \( y=\frac{1}{x}+3 \) is based on the parent function \[ y=\frac{1}{x}. \] 2. **Determine the transformation:** The function has an added constant \( +3 \). In functions, adding a constant outside the function translates the graph vertically. Here, \( +3 \) shifts the graph upward by 3 units. 3. **Conclusion on the transformation:** \[ y=\frac{1}{x}+3 \] is the graph of \( y=\frac{1}{x} \) shifted upward by 3 units. - The **vertical asymptote** remains unchanged at \( x=0 \) (because adding a constant does not affect vertical asymptotes). - The **horizontal asymptote** of \( y=\frac{1}{x} \) is \( y=0 \). After shifting upward by 3 units, the horizontal asymptote becomes \[ y=3. \]

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Bonus Knowledge

This equation represents a family of hyperbolas that are translated vertically. When you graph \( y=\frac{1}{x} \), you get a classic hyperbola with two branches. By adding 3, you shift the entire graph upwards, making the horizontal asymptote at \( y=3 \). Hence, as \( x \) approaches both positive and negative infinity, \( y \) will get closer to 3 but never touch it. In real-world applications, this kind of equation can model various phenomena, such as the relationship between pressure and volume in gases (Boyle's Law) or the diminishing returns seen in economics, where increasing investment leads to proportionately smaller gains. It’s also seen in many natural processes where one variable inversely affects another.

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