Which of these distance measures would you most likely find on a walking tour map of downtown Paris, using the metric system?
2 answers:
You might be interested in
f(1) = -8, simply is a way of saying, the 1st value in the arithmetic sequence is -8.
f(n) = f(n-1) - 3, is another way of saying, following values are just, the previous minus -3.
so in short, -3 is the common difference, since that is what we're "adding" to get the new value in the sequence.