Answer:
shift it down by 4 units
Step-by-step explanation:
by the placement of the -4 it can be determined that you would shift it according to the y axis
The formula a(x-h)^2 + k = y
h represents change in x, k represents change in y
-k means shift down 
 
        
             
        
        
        
By the Pythagorean theorem,

 
        
             
        
        
        
Answer:
3.5
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
0
Step-by-step explanation:
When you multiply any number by 0, the answer is always 0.