Answer:
=12x+y
Step-by-step explanation:
Combine like terms
=5x+-3y+7x+4y
=(5x+7x)+(-3y+4y)
=12x+y
 
        
                    
             
        
        
        
Answer: A
Please mark brainliest!
        
             
        
        
        
Well the first thing that came to my mind was to do rise/run and doing that I got 6/5 which I added together to get 11 but since that's obviously not correct I assumed it was a little under so the answer I got was  7.8
Really hope this helps!
 
        
             
        
        
        
I am not sure, but I checked my answer and I am right. Hope this helps, thank you :) !!
 
        
        
        
Answer:
non-proportional's with positive y intercept are:
y=2.5x-7
y=-5x-8
proportional's with positive y intercept are:
y=1.2x
y=-10x
y=7x/8+1