Question 62756
Given two points A(-1,6) AND B(5,2)

Take it as x1 = -1, y1 = 6, x2 = 5, y2 = 2

The slope of the line given by m = (y2 -y1) / (x2 -x1) 
          
m = (2 - 6) / (5 - (-1))

m = - 4 / 5 + 1

m = -4 / 6

m = -2 / 3

Therefore the slpoe is equal to (-2/3)