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             Directions: Read carefully.   
               
            
             
            
              
                
                  
                    1.    | 
                    
                      Which of the following diagrams shows a relation that is not a function?
                                              Choose: 
                      
                      
                      
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                    2.   | 
                    Given that relation S = {(5,-1),(-2,3),(-3,4),(k,1),(2,-2),(-6,0)}. 
Which of the following values for k will make relation S a function?
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                    3.   | 
                    Which of the following graphs is not a function?
                      
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                    4.   | 
                    Which of the following relations is a function?
                      
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                    5.   | 
                    Is the relation shown in this chart a function?
                       
                    
                        
                          
                            x  | 
                            -2  | 
                            3  | 
                            -5  | 
                            -3  | 
                            4  | 
                            -2  | 
                            -4  | 
                           
                          
                            y  | 
                            -4  | 
                            7  | 
                            1  | 
                            0  | 
                            3  | 
                            4  | 
                            -5  | 
                           
                         
                         
                    Choose: 
                          
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                    6.   | 
                    
                      
                        
                            
                           | 
                          Given:   
                            the  values x = {-3, -2, -1, 0, 1, 2, 3}  
                            are input into a function machine 
                            y = x2 - 1.  | 
                         
                       
                      Which of the following sets will be the output from the machine? 
                        Choose: 
                      
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                    7.   | 
                    
                      Is the relation shown in this chart a function?  
                      
                      
                        
                          x  | 
                          -3  | 
                          -2  | 
                          -1  | 
                          0  | 
                          1  | 
                          2  | 
                          3  | 
                         
                        
                          y  | 
                          -2  | 
                          -2  | 
                          -2  | 
                          -2  | 
                          -2  | 
                          -2  | 
                          -2  | 
                         
                       
                                                Choose: 
                      
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                    8.   | 
                    
                      Which of the following relations is not a function?
                      
                      Choose: 
                      
                      
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                    9.   | 
                    Is the relation shown in this chart a function?  
                    
                        
                          
                            x  | 
                            7  | 
                            5  | 
                            3  | 
                            6  | 
                            4  | 
                            5  | 
                            1  | 
                           
                          
                            y  | 
                            9  | 
                            3  | 
                            7  | 
                            0  | 
                            -3  | 
                            3  | 
                            7  | 
                           
                         
                        
                       
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                    10.   | 
                    
                      
                        
                            | 
                          Given:  
the  values x = {-1,  0, 3, 8, 15} 
are input into a relation machine 
  
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                      Will these x-values and their output form a function?
                      
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