Answer:
With math I think
Step-by-step explanation:
 
        
             
        
        
        
Answer:  
y = 3x
y = 2.2x
y=1/2x
Step-by-step explanation:
i did the test thank me later
 
        
             
        
        
        
Answer:
less than
Step-by-step explanation:
 
        
             
        
        
        
You have to make them have their least common denominator to add or subtract, in this case 36.
Multiply 1/12 by 3, to get the denominator 36: 3/36. 
Multiply 7/9 by 4, to get the denominator 36: 28/36. 
Now add the numerators: 3+28=31, 31/36 is as simplified as possible so your answer is 31/36 :) I hope this helps :)