In this relationship between two quantities, for each input there is exactly one output

A function

Step-by-step explanation:

This is the exact definition of what makes a function.

Examples of functions are

lines: like the equation y = 3x

what ever value you plug in for x, it results in only one value for y

Quadratics: like the equation y = x²

what ever value you plug in for x, it results in only one value for y

Function

Step-by-step explanation:

took the test on usatestprep