Question

2 real world examples of function rules

Answer 1

A soda, snack, or stamp machine The user puts in money, punches a specific button, and a specific item drops into the output slot. (The function rule is the product price. The input is the money combined with the selected button. The output is the product, sometimes delivered along with coins in change, if the user has entered more money than required by the function rule.)

Answer 2

Most thermometers come with both Celsius and Fahrenheit scales. Students can study a thermometer as an input/output table. Students who have had experience in deducing composite function rules might be able to compare the two scales (noting, for instance, that 0° C = 32° F and 32° C = 50° F) and figure out the mystery function rule -- the formula for converting from one scale to the other.

Answer 3

circumference of a circle is a function of diameter.