Select linear or nonlinear to correctly classify each function

1. Non - linear

2. Linear

3. Linear

4. Linear

Step-by-step explanation:

All linear equations can be expressed in the form of  

where m is slope and b is y-intercept.

Horizontal line is a special case of linear functions, where slope is 0. It means y=b is also a linear funcion.

First function is

It is a non linear function.

Second function is

It is a linear function.

Third function is

It is a linear function.

Fourth function is

It is a linear function.

pla·gia·rism

/ˈplājəˌrizəm/

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

step-by-step explanation: