Answer: -8
Explanation:
The line has a slope of 1/8, so the x increases by 8 for every 1 the y increases, and vice versa for a decrease.
The difference between the x coordinates 8 and -8 is 16. We then need to divide this by 8, because the x increases by 8 for every 1 the y increases, and we need to find the increase/decrease in y.
16/8 = 2
We need to subtract 2 from -6, giving us our answer, -8.