Answer:
what is this
Step-by-step explanation:
 
        
                    
             
        
        
        
Given parameters: 
First point  = (12, -5)
Second point  = (10, -4)
Unknown: 
Slope of the line = ? 
Slope is simply the vertical rise divided by the horizontal distance. 
              Slope  = 
Simply to find slope; 
            Slope  = 
First point  = (12, -5), x₁  = 12 and y₁  = -5
Second point  = (10, -4), x₂  = 10 and y₂  = -4
Input the parameters: 
        Slope  =  
                   = 
                   =  - 
The slope of the line is -
 
        
             
        
        
        
Move constant over (5x=38+2), combine terms (5x=40), divide both sides by 5 (x=8)