Does this say 8 × 3n/12=13? I want to be sure so I don't give you the wrong answer.
Slope of the line
(6-1) / (-5-0)
5 / -5
-1
General equation of the line
y = -x + c
if this passes through (0,1)
0 = (-1*1) + c
c = 1
so the equation is
y = -x + 1
This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by 2 gives the next term.