Slope of a Line given points (-1, 2) and (3, -8)

Given Coordinates: x1 = -1  y1 = 2,  x2 = 3  y2 = -8
Slope Formula: m  =  
y2 − y1/x2 − x1

Substitute the given coordinates into the Slope Formula and Simplify:
m  =  
-8 − 2/3 − (-1)
m  =  
-8 − 2/3 + 1
m  =  
-10/4
m  =  –
10/4
   (Greatest Common Factor of 10 and 4, GCF(10, 4) = 2)
m  =  –
5/2

Therefore, the Slope of a Line given points (-1, 2) and (3, -8) is equal to  –
5/2

Note: As a decimal number,  –
5/2
  = -2.5

The solution above and other related solutions were provided by the Slope of a Line given Two Points Application.