I hope this helps you 
x=42.8+6.9
x=49.7
        
                    
             
        
        
        
 5 and 6, the value is about 5.48
        
             
        
        
        
The slope intercept is equal to the rise/run. 
So lets say to get from one point to the other, you go down 2 units and go right 3 units.
Since you went down it is a -2. If you had gone up 2 units, then it would be a positive 2.
Since you went to the right, it is a positive 3. If you had gone left 3 units, then it would be -3.
-2/3
 
        
             
        
        
        
Use the internet that is what i would sorry i am in the 10th grade
        
             
        
        
        
Answer:
Option B
Step-by-step explanation:
Slope
And
These are acceleration
Y intercept is (0,2) as x coordinate is 0
This is initial velocity 2m/s
The runner stopped at 8s