Algebra-1

Question Analysis
This question involves the concept of classifying functions based on the power of the independent variable x. The main focus is on distinguishing between linear and non - linear functions by examining the highest power of x in the function.

Key Concept Explanation
Linear Function: A function of the form , where m and b are constants, and the highest power of x is 1. The graph of a linear function is a straight line.
Non - linear Function: A function where the highest power of x is greater than 1 (or less than 1 for some cases like square - root functions, but here we focus on polynomial functions). Polynomial functions with degree (highest power of x) greater than 1 are non - linear, and their graphs are not straight lines.

Step-by-step Solution
1. Identify the highest power of x in the function 

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