Answer:
Graphing
Step-by-step explanation:
1) You can graph this equation by using y=mx+b. You can replace that equation with y=3x-1.
M=3
X=x
B=-1
On a graph you would down 1 since it's negative and make a point. Then you would put a 1 under the 3 to make it a fraction. 3/1. Then you would divide 1 by 3 (1 ÷ 3). Then you would go to the right 0.33 because it's positive, and the up 1. Then you would make a second point.
This would only give you one line which wouldn't give you an intersection.
 
        
                    
             
        
        
        
One way to do this is to notice

Then

We have

and since  has a period of
 has a period of  ,
,

and so

 
        
             
        
        
        
Answer: D
Step-by-step explanation:
 
        
             
        
        
        
Answer:
I thinks its C , but im sorry if its wrong.
Step-by-step explanation:
 
        
             
        
        
        
Answer:  No two students ran same distance
Step-by-step explanation:
Given
Stacy ran  of a km i.e.
 of a km i.e. 

Jules ran  of a km i.e.
 of a km i.e.

Raul ran  of mile i.e.
 of mile i.e.

So, no two students ran the same distance.