Answer:
The correct choice is A
Step-by-step explanation:
Proportionality
Two variables x and y are proportional if:
y = kx
where k is the constant of proportionality.
We are given that the constant of proportionality of 7, thus the equation is:
y = 7x
Multiplying by 4:
4y = 28x
It's apparent the correct choice is A
