A real-life example of a relation that can be considered a function is the relationship between a person's height and their weight.
This relation is a function because for each given height value, there is only one corresponding weight value. In other words, a person's weight is uniquely determined by their height. For example, if someone is 5 feet 6 inches tall (a specific height value), then their weight can be determined precisely, such as 150 pounds (a unique weight value).
This function property holds true since the height of a person does not result in multiple weight values. If it did, it would violate the function condition because for the function to be valid, each input (height) should correspond to exactly one output (weight). However, there can be multiple people with the same height but different weights, which is perfectly valid for a function.
Give an example of a relation in real life, and explain why it is a function.(
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