Question

if y=48 when x=24 find x when y=8

Answer 1

Are you asking for a direct or inverse variation ?

Answer 2

Direct variation: \(\normalsize\color{blue}{ y=k~x\LARGE\color{white}{ \rm │ }}\)
Inverse variation: \(\normalsize\color{green}{ k=y~x\LARGE\color{white}{ \rm │ }}\)

Answer 3

k is the constant,
y is the range
x is the domain
(basically)