Answer:
v = 0.416 m/s
Step-by-step explanation:
Give that,
Distance covered by a train, d = 50 m
Time taken, t = 120 s
We need to find the speed of a train. The formula for speed of an object is equal to the total distance covered divided by total time taken. It can be given by :

So, the speed of a train is 0.416 m/s.
 
        
             
        
        
        
If you were to plot the function y=-x+6, both functions meet at the point (4,2)
        
                    
             
        
        
        
When you look at the graph, the X is the x value and the one on the f(x) is the y value, imagian it is on a graph and x is the steps you have to walk then imagain a ladder you have to go as high as the f(x) value says, then mark them. if they follow a pattern then write it down, if it does not then write incosentant. 
Have a nice day.
 
        
             
        
        
        
4 1/5 because 4+5=9 so 4 then you will have 1/5