Test Active 223 15 16 17 18 19 20 TIME REMAIN 01:46:4 A function is a relation in which each element in the input is mapped to how many elements in the output? exactly one one or more one or two exactly two Mark this and return Save and Exit Next Submit
In mathematics, a function is a special type of relation between two sets: the domain (input) and the codomain (output). By definition, a function assigns each element in the domain to exactly one element in the codomain. This is known as the "uniqueness" property of a function. It is one of the key characteristics that distinguishes functions from general relations, where a single input could relate to multiple outputs.
Given this definition, the correct answer to the question "A function is a relation in which each element in the input is mapped to how many elements in the output?" is:
exactly one.
This ensures that for every input value there is a single, well-defined output value, making the function predictable and consistent across its entire domain.
