How will you identify function given the set of ordered pairs?

To identify whether a set of ordered pairs represents a function, check if each input (or x-value) is associated with exactly one output (or y-value). If any x-value appears more than once with different y-values, the set does not represent a function. You can also visualize the set by plotting the points on a graph; if any vertical line intersects the graph at more than one point, it indicates that the set is not a function.