Answer:
y = ¼(x-4)
Step-by-step explanation:
Before solving the question, let's look at one example,
- A is directly proportional to B means A∝B which also means A=kB where k is a constant.
In this case, y is directly proportional to (x-4) means that y∝(x-4) which can also mean that y=k(x-4).
Hence, to find the value of k, substitute x=16, y=3 into y=k(x-4),
3=k(16-4)
k=3/12
k=1/4
After that, substitute the k value into the equation,
y = ¼(x-4)
