Question

The variable x varies directly as y when y is 10, x is 3/2 . Find y when x is a

Answer 1

x varies directly as y when y=10 x is 3/2
so, y=xk ( for some value of k )
k=y/x
k= 10/1.5
k=20/3
 now if x=a then,

y=20a/3