Answer:
-0.2
Step-by-step explanation:
Slope (m) =ΔY/ΔX= 8-(-2)/-3-(-1)
=	-1/5
=	-0.2
 
        
             
        
        
        
Answer:
400 meters
Step-by-step explanation:
We are told in the question that:
Jake runs the 100-meter dash in
track. 
Erika runs a race 400% the distance of Jake's race.
Hence, the length of 
Erika's race is calculated as: 
400% × 100 - meter
= 4 × 100- meter
= 400 meters
Therefore, Erika's race was 400 meters long.