Answer:
28/5= 5 3/5 15/7= 2 1/7 21/4=5 1/4
Step-by-step explanation:
 
        
                    
             
        
        
        
Horizontal shift 1 unit left and vertical shift 11 units up
        
             
        
        
        
 Yes, because a rational number is any number that can be expressed as a fraction a/b where a/b are both integers, but cannot be zero.
        
             
        
        
        
Answer:The  equation relating I, r, and k is I =K/r²
Step-by-step explanation:
The intensity, I, of a sound varies inversely with the square of the distance, r, from the source of the sound can be written as 
 I ∝ 1/r²
Introducing the constant of proportionality, K we have that 
I =K x 1/r²
 Therefore , the  equation relating I, r, and k is I =K/r²