Y = kx, so y/x is constant 
you want y such that 
y/12 = -2/-8
        
             
        
        
        
Answer:
mean: 31.625
range: 31
Step-by-step explanation:
 
        
                    
             
        
        
        
Okay so this is a wild guess but I would say 12. The whole angle is 90, but only 1/3 of that is in the smaller portion of the triangle. So, I assumed that 1/3 of the length of the whole triangle. Three times 6 is 18 and minus AD is 12. So BD=12? This is my best guess hope it helps