Answer: 10
Explanation:
To find the slope of the line from two points, use the formula
m = (y2 - y1)/(x2 - x1).
Plug in the values (m = 1/4, y1 = 6, y2 = s, x1 = -6, x2 = 6). The now-plugged-in equation should be 1/4 = (s - 6)/(10 + 6).
Combine 10 + 6 to become 1/4 = (s - 6)/(16). Multiple 16 on both sides to get 4 = s - 6. add 6 to both sides to get s = 10.