Question

Which of the following best defines a function?

A function is a special type of relation for which there is a rule that pairs each input with exactly one output.

A function is a relationship that defines the connection between two variables.

A function is a set of ordered pairs in which no y-value repeats.

A function pairs input and output values with no particular pattern.

Answer 1

A function is a special type of relation for which there is a rule that pairs each input with exactly one output.

Explanation:

Functions have input (x) and output (y). For each x value there can only be one y value. :) repeating x values means it isn't a function. its okay to have repeating y values.

We can cancel out the last two for this reason above ^^^^ the second choice is wrong because i say so (=^w^=)