HELP PLS ANSWER 
Which set of ordered pairs represents a function?        
      
                
     
    
    
    
    2  answers:
            
              
Answer: 
D
Step-by-step explanation: 
It's D bc you can have two of the same inputs equaling differnt outputs. You could of it as 4+3 = 7, 9, 2, and 1 or whatever numbers, its not true it only equals 7. Hope that helps
 
                                
             
                    
              
Answer: 
the answer is d
Step-by-step explanation: 
the x values don't repeat so therefore It is a function.
 
                                
             
         	
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Answer: 
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Step-by-step explanation: 
tg a = 3/4
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Answer: 
x=1
Step-by-step explanation: 
 
        
                    
             
        
        
        
It would be -4x+(-12)=12 good luck
        
                    
             
        
        
        
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Answer: 
She spent 8 dollars.
Step-by-step explanation: 
24 divided by 3 is 8