Answer:
no f-ing clue 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
20
Step-by-step explanation:
0.4x = 8
0.4x/0.4 = 8/0.4
x = 20
 
        
             
        
        
        
Answer:
3
Step-by-step explanation:
gradient/slope/m formula:-
(-6,2) (4,10).
m=(10-4)/(-4-6)
m=6/2
m=3
 
        
                    
             
        
        
        
Answer:
A, C, D
Step-by-step explanation:
In a proportional relationship, y = kx, k is the constant of proportionality.
A) 
4y = x
y = 1/4 x
k = 1/4      Yes
B) 
y = 4x
k = 4      No
C)
32y = 8x
y = 8/32 x
y = 1/4 x
k = 1/4    Yes
D)
y = 0.25x
k = 0.25 = 1/4     Yes
E)
1/4 y = 2x
y = 4 * 2x
y = 8x
k = 8     No
Answer: A, C, D