a__ is a rule that assigns each value of the independent variable to
exactly one value of the dependent variable.

function

Step-by-step explanation:

function

Step-by-step explanation:

Functions are relationships or rules that assign each value of the independent variable (Domain) exactly one value of the dependent variable (Range)

For example if we have the following function:

The independent variable is x.

Notice that when:

In this way the function assigns an output value to each input value.

Therefore the answer is:

A_function_ is a rule that assigns each value of the independent variable to exactly one value of the dependent variable.

no this is a nonlinear negative