The sum of 6 consecutive integers is 519.

One way to do this is to consider what the average of these integers is. It would be 519/6, or 86.5. This means the six integers are "centered" around 86.5: they would be 84, 85, 86, 87, 88, and 89 (there are three numbers greater than 86.5 and three less than 86.5 in this list).

i believe that the answer is

b. y-1=-2(x-4)

hope this !