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In the inequality itself, the symbol used would be ">" (greater than). This symbol indicates that the values to the right of the hollow circle on the number line are greater than the value at the circle itself.
For example, if the inequality represented on the number line is x > 2, this means that x can take any value greater than 2. The hollow circle at 2 indicates that 2 is not included in the solution set, and the arrow pointing right shows that the values to the right of 2 are the solutions to the inequality.