Refer to the graph below. The function is 
for the interval of (5, 9). The function is 
for the interval (9, 12). The function is 
for the interval of (-2, 8). The function is 
 for the interval (3, 5). The function is 
 for the interval (8, 12.5).
                                             
                                          
                                          
                                       