Answer:
This function represents a direct variation because it passes through the origin and has a constant rate
 
        
             
        
        
        
-x - 9 

You want to get x by itself.
First subtract 9 from both sides of the equation.
-x - 9 

    +9                 +9
-x 

Then divide -1 on both sides.
-x/-1 

I'm pretty sure when you divide a negative number when solving inequalities, you switch the sign.
x 
 
 
        
        
        
M- 2 b- 3 ... 2x+3 negative slope not sure if proportional or not
        
                    
             
        
        
        
I think you should combine like terms