Answer:
purple graph is for x+y>3
black graph is for x+y<-4
Step-by-step explanation:
I recommend u use desmos. it'll really help
hope u have a nice day :)
 
        
             
        
        
        
Answer:
1. 44 + 3x
2. 2y - 8
3. x - 6
15. 
16. 
17. 
Step-by-step explanation:
1. 7² + 2² - 5 - 4 + 3x
    49 + 4 - 5 - 4 + 3x
        53 - 5 - 4 + 3x
            48 - 4 + 3x
               44 + 3x
2. - y - 5 + y + 2(2y-y) - 3
      -y - 5 + y + 4y - 2y -3
       -y - 5 + 5y - 2y - 3
           4y - 2y - 5 - 3
                  2y - 8
3. 5x -3 - x - 3(x + 1²)
     5x - 3 - x - 3x - 3
       4x - 3x - 3 -3 
            x - 3 -3 
              x - 6
15.   
 
    =  
 
    =  
 
    =  →
 → 
16.  
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    = 
    =  →
 →  →
 → 
17.  
    =  
    =    
    =      →
 → 
Hope this helps.
 
        
             
        
        
        
Answer:H 
Step-by-step explanation:
 
        
             
        
        
        
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A relation is (also) a function if every input x is mapped to a unique output y.
In terms of graphical representation, this implies that a graph represents a function if there doesn't exist a vertical line that intersects the graph more than once. So:
- The first graph is exactly a vertical line, so it's not a function.
- The second graph represents the function y=x, so it's a function: you can see that every possible vertical line crosses the graph only once.
- The third graph is not a function, because you can draw vertical lines that cross the graph twice.
- Similarly, in the fourth graph you can draw vertical lines that cross the graph twice
- The fifth graph is a function, because every vertical line crosses the graph once
- The last graph is a function, although discontinuous, for the same reason.