It seems like you're working with an expression where $y$ is defined as a function of $x$, possibly $y = \frac{1}{x}$, a reciprocal function. Is that what you're trying to express? If so, the equation is written as:

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

This equation describes a hyperbola where $y$ approaches 0 as $x$ approaches infinity or negative infinity, and $y$ becomes very large as $x$ approaches 0. The graph has asymptotes at $x = 0$ and $y = 0$.

Would you like a detailed explanation of how to analyze or graph this function? Let me know if you have questions or want to explore related concepts!

Here are 5 questions that could expand on this topic:

1. How do you find the domain and range of the function $y = \frac{1}{x}$?
2. What are the key features of the graph of $y = \frac{1}{x}$, such as intercepts and asymptotes?
3. How does the function $y = \frac{1}{x}$ change if you shift or stretch it?
4. What is the behavior of the function as $x \to 0^+$ and $x \to 0^-$?
5. How do you apply the concept of limits to $y = \frac{1}{x}$?

Tip: When analyzing a reciprocal function like $y = \frac{1}{x}$, it's helpful to remember the vertical and horizontal asymptotes, which show where the function is undefined and how it behaves at extreme values of $x$.