In an arithmetic sequence, the 10th term is 37, and the 21st term is 4. Find the common difference and the first term

Common difference is 3. And the first term is 64.

Step-by-step explanation:

The differnce between 21 and 10 is 11. So there are 11 unknown numbers in between.  And the difference between 37 and 4 is 33. 33/11 is equal to 3. So the pattern is minus three. the first term is 9 terms before 37. 9 times 3 is 27. 37+27 is equal to 64. so the first term is 64

this shows a reflection over the x-axis and is translated one unit down and 6 units to the right (x + 6, y - 1)

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