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.

step-by-step explanation:

the options are kind of confusing. i can tell you what i see going on here when i look at the graph.

the class and exam medians are closely related, and it looks like the low outlier on the exam did pull the median lower. [tex][/tex]