Answer:
1/2
Explanation:
The slope of a line is defined as ...
slope = (change in y)/(change in x)
Given two points, (x1, y1) and (x2, y2), the slope can be computed using ...
slope = (y2 -y1)/(x2 -x1)
It does not matter which points you call point 1 and point 2. You just need to be consistent.
Using the point values in the order given in the problem statement, we have ...
slope = (4 -6)/(1 -5) = -2/-4
slope = 1/2