Parallel means they have the same slope. 
The given equation has a slope of 3. Slope intercept equation: y = mx + b
a. 6x + 2y = 12
Subtract 6x from both sides. 
2y = - 6x + 12
Divide both sides by 2. 
y = -3x + 6 Not parallel 
b. -3x + y = 8
Add 3x to both sides. 
y = 3x + 8 Parallel 
c. 3y = 9x
Divide both sides by 3
y = 3x Parallel 
d. y = -1/3x Not parallel 
B and C are parallel
        
             
        
        
        
Answer:
7
Step-by-step explanation:
using the distance formula
√(4- -3)^2 + (4-4)^2
√49
7
 
        
                    
             
        
        
        
W = 3L so 64 = WL = (3L)(L) = 3 L ^2 Square root both sides. W = 8