Less then i really hope i helped
        
             
        
        
        
Answer:
8
Step-by-step explanation:
I've taken test
 
        
                    
             
        
        
        
Answer:
x = -4
Step-by-step explanation:
3x + 3 +9 = box
3x = -12
3x/3 = -12/3
x = -4 
 
        
                    
             
        
        
        
The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.