It would be a reflection across the x acess
        
             
        
        
        
Answer:
   y = 8x -25
Step-by-step explanation:
The two-point form of the equation of a line can be used.
   y = (y2 -y1)/(x2 -x1)(x -x1) +y1
   y = (7-(-1))/(4-3)(x -3) +(-1)
   y = 8(x -3) -1
   y = 8x -25 . . . . slope-intercept form of the equation
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We don't know what you're starting with, so we don't know how to "complete the equation." Perhaps the above equation is sufficient for the task.
 
        
             
        
        
        
For the first question the answer would be the first quadrant
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Adding 2x to both sides we get
y = 2x
This is direct variation   where the constant is 2. 
        
             
        
        
        
In math for we have:
2x-2=x+64
which turns into:
x=66
(subtract x from right) & (add two from left)