Question

Given the arithmetic sequence an = 4 − 3(n − 1), what is the domain for n? (6 points)

Answer 1

Given the arithmetic sequence is given by:
an=4-3(n-1)
writing the above into a straight line form we get:
an=4+3-3n
an=-3n+4
this a straight line equation with a negative slope, thus the domain will be:
(-∞,∞)