Algebra-1

Question Analysis
This question requires the student to determine the first term and the common difference of the sequence given the second and sixth terms. 

Key Concept Explanation
The common difference can be found by dividing the difference between the given terms by the number of intervals between them. The first term can then be found using the common difference and one of the given terms.

Step-by-step Solution
1. Identify the fourth term:
2. Identify the sixth term:
3. Find the common difference:
4. Find the first term:

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