Answer:
When both equations have the same slope, but not the same y-intercept, they'll be parallel to each other and no intersections means no solutions. When both equations have different slopes than regardless of the y-intercept they'll intersect for certain, therefore it has exactly one solution.
Step-by-step explanation:
Got this from google hope it helps 
 
        
             
        
        
        
Answer:
x= -21
Step-by-step explanation:
-1/3=7/x
-1x=21
-1x/-1=21/-1
x= -21
 
        
             
        
        
        
<span>22,119 rounded to the nearest hundred
=
22,100
hope it helps</span>
        
             
        
        
        
Answer:It'll be part B
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
3