Answer:
Last option: Square both sides of the equation in step 1 to eliminate the square root.
Step-by-step explanation:
The error is in the process of subtracting 3 from both sides, since +3 is inside the root.
In order to be able to operate with the terms that are inside the root, we need to eliminate the root, and for that we need to square both sides of the equal sign.
 
        
             
        
        
        
The slope intercept formula would be: y=3/4x-3. Hope this helps!
        
             
        
        
        
 A because 2x9 equals 18 and 9x2 equals 18