Answer:  
 
Step-by-step explanation:
We know that , the equation of a line that passes through (a,b) and (c,d) is given by :_

Standard form of equation of line = 
Given points =  (7, -3) and (4, -8)
Then, the equation of a line that passes through the points . (7, -3) and (4, -8) is given by -

 [∵ (-)(-)=(+)]
   [∵ (-)(-)=(+)]
 
 
 
 
 
 
 
 
 
 
 
 
Or  
 
Hence, the required equation :- 
 
 
        
             
        
        
        
Answer:
Letter B the second one
Step-by-step explanation:
 
        
             
        
        
        
One solution. Given that there is only one variable and it is linear, we know it must only have one solution. <span />
        
             
        
        
        
X = 16
x = - 16
You could do it this way
x^2 - 256 = 0
(x - 16)(x + 16) = 0
x - 16 = 0
x = 16
x + 16 = 0
x  = - 16
        
                    
             
        
        
        
Answer:
Negative 
Step-by-step explanation:
If a line has a positive slope, then y always increases when x increases and y always decreases when x decreases. Thus, the graph of the line starts at the bottom left and goes towards the top right.