The graph you've provided appears to be a smooth curve, and you are asked to determine its range. The range of a function or graph represents the set of all possible $y$-values (vertical axis values) that the function can take.

Step-by-Step Approach:

1. Identify the highest point (maximum): The highest point on the graph is approximately at $y = 5$.

2. Identify the lowest point (minimum): The lowest point on the graph is approximately at $y = -10$.

3. Range of the graph: Since the graph smoothly transitions between its minimum and maximum points without any breaks, the range includes all the values between these two extremes. Hence, the range of the graph is:

$\boxed{[-10, 5]}$

This means the graph takes on all $y$-values between $-10$ and $5$, inclusive.

Would you like further details on any part of this?

Here are 5 related questions to explore further:

1. How can we find the domain of the same graph?
2. What does it mean for a function to be continuous based on its graph?
3. Can we deduce if this graph represents a periodic function?
4. What is the significance of identifying critical points on a graph?
5. How do we determine if the graph has any symmetry (e.g., odd or even)?

Tip: When interpreting the range of a graph, always look for the highest and lowest points the curve reaches along the $y$-axis.