(x – 8)² + (y – 9)² = 3 (x – 8)² + (y – 9)² = 14 are the correct answers.
An arithmetic sequence is defined by the property that the difference between each pair of adjacent terms is consistently the same. When this requirement is met, that constant is recognized as the common difference.
This particular sequence is arithmetic, as the difference between each term and the preceding one is
Thus, the common difference is 3.4, considering that the adjacent terms differ by 3.4