The image appears to show a shape that looks like an ellipse or a circle, sketched on the Cartesian plane with both the $x$-axis and $y$-axis labeled.

To determine whether the graph represents the function as a function of $x$ or $y$, more context is needed, specifically whether we are considering this as an equation of a circle, an ellipse, or some other curve.

However, based on common graphs:

• If the graph represents a full circle or an ellipse, this is usually described by an equation involving both $x$ and $y$, such as:
  • For a circle: $x^2 + y^2 = r^2$ (where $r$ is the radius)
  • For an ellipse: $\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1$
• If part of the circle is shaded, as seen in the image, this could indicate a restriction on the values of $x$ or $y$, possibly indicating a semi-circle or an inequality.

If you are referring to whether the curve should be expressed as a function of $x$ or $y$, you might need to clarify if you're looking at something like:

• $y = f(x)$ or $x = f(y)$ forms.

Please let me know if you'd like further details on the type of graph this might be or additional explanations on how to derive the equation from it.

Here are 5 related questions for further exploration:

1. Does the shaded region suggest a semi-circle or part of the graph being restricted by $x$ or $y$?
2. Would you like to explore how to identify whether a curve is a function in terms of $x$ or $y$?
3. Could you provide more details about the kind of shape or equation you're working with (e.g., circle, ellipse, etc.)?
4. Would you like help on how to derive the equation of an ellipse from a graph like this?
5. Are you exploring this as a specific problem in conic sections, functions, or inequalities?

Tip:

To determine whether a curve represents a function of $x$, you can apply the vertical line test: if any vertical line crosses the curve more than once, it’s not a function of $x$. Similarly, for a function of $y$, use a horizontal line.