A common is the difference between each term in an arithmetic sequence.

An arithmetic sequence is a sequence where the difference between any two consecutive terms is a constant.

The constant between two consecutive terms is called the common difference.

The common difference is the number added to any one term of an arithmetic sequence that generates the subsequent term.

The terms of an arithmetic sequence can be found by beginning with the initial term and adding the common difference repeatedly.

Step-by-step explanation:

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step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.