SOLUTION: write the rule for the nth term of the arithmetic sequence 9,4,-1,...

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Question 961013: write the rule for the nth term of the arithmetic sequence 9,4,-1,...
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
d = 2nd term - 1st term = 4-9 = -5 = 3rd term - 2nd term = -1 - 4 = -5
a%5B1%5D=matrix%281%2C4%2Cfirst%2Cterm%2C%22%22=%22%22%2C9%29
a%5Bn%5D=a%5B1%5D%2B%28n-1%29d%22%22=%22%229%2B%28n-1%29%28-5%29=9-5%28n-1%29=9-5n%2B5=14-5n

a%5Bn%5D=14-5n

Edwin