Determine Whether the Variation Model Below Is of the Form $y = k x$

Multiple Choice

Determine whether the variation model below is of the form $y = k x$ or $y = \frac { k } { x }$ . x
12
24
36
48
60
Y $\frac { 1 } { 18 }$ ​ $\frac { 1 } { 36 }$ ​ $\frac { 1 } { 54 }$ ​ $\frac { 1 } { 72 }$ ​ $\frac { 1 } { 90 }$

A) $y = k x$
B) $y = \frac { k } { x }$