Y varies inversely with x, when y is 48 when x is 1/3 .which equation represents this situation?

a) Y=16/x
b) Y=16x
c) Y=144x
d) Y= 144/x

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.