The graph shows a number line where the open circle is located at $x = 3$, and the arrow points to the right, indicating numbers greater than 3. Since the circle is open, it means that 3 is not included in the solution.

Thus, the inequality represented by the graph is:

$x > 3$

Would you like further details or have any questions about this?

Here are 5 related questions to extend your understanding:

1. How would the inequality change if the circle at $x = 3$ were closed?
2. Can you graph the inequality $x \geq 2$ on a number line?
3. What is the inequality for a graph with an open circle at $-1$ and an arrow pointing left?
4. How do you write an inequality for numbers less than or equal to 5?
5. What does it mean when there is no arrow in the graph, only a segment of the line highlighted?

Tip: Always remember that an open circle on the graph means "not included," while a closed circle means "included" in the solution.