Answer:
a) linear
Step-by-step explanation:
Linear keeps a steady pace throughout the function. in the graph, the function is decreasing by 0.5 
 
        
                    
             
        
        
        
30-4 (2+5) = 2
30-4(7)=2
30-28=2
        
             
        
        
        
Its basically 7 see there is nothing but the number 7 which means as to an expression its 7.
        
                    
             
        
        
        
X=5 because 2x plus 6x equals 8x and then when you divide the 40 by 8 u get 5
        
                    
             
        
        
        
C I did the test and if it’s wrong I don’t know what to tell you