Question

Explain how you know whether a relationship between two quantities is or is not a function

Answer 1

In order to know whether a relationship is a function or not, follow these steps:

1. Identify the input values, usually grouped as the values for the independent variable "x"

2. Identify the output values, usually grouped as the values for the dependent variable "y"

3. If each input value leads to only one output value, classify the relationship as a function. If any input value leads to two or more outputs, do not classify the relationship as a function.