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1, 0 , 8, and 2 would all lie on the y-axis
First, we are going to find the difference,
, of our sequence. Remember that in an arithmetic sequence
, so:
Now that we have our difference, we can find the sum of the first 14 terms of our sequence using the formula:
where
is the number of terms we want to add
We now know that
,
, and
. So lets replace those values in our formula:
We can conclude that the sum of the first 14 terms of our sequence is
-791.