Answer:
Solution: x = 6
Step-by-step explanation:
Given equation is:

In order to solve the equation both sides will be squared

Verifying the solution

 
        
                    
             
        
        
        
Y-intercept when x = 0
so 
y = 4
        
             
        
        
        
Basically you find the data points and fill in the values. For Point J it is (2,4). They want you to do this: (2-4,4-6)...it then becomes (-2,-2).
So 
J: (-2,-2)
K: (-1, -4)
I: (-2, -5)
Those are your new points. I hope this helps love! :)
        
             
        
        
        
Answer:
x = 3 
Step-by-step explanation:
Mathematically, the mean is the sum of the numbers divided by the count of the numbers 
The count of the numbers is 5
Thus;
( 4 + 8 + 9 + x + 2x)/5 = 6
(21 + 3x)/5 = 6
21 + 3x = 6(5)
21 + 3x = 30
3x = 30-21
3x = 9
x = 9/3
x = 3