Question

Suppose y varies directly with x, and y=24 when x=8. what is the value of y when x=10?

Answer 1

varies directly
y vaires diretly with x means
y=kx where k is constant
y=24
x=8
find k
24=k8
divide 8
3=k

y=3x
when x=10
y=3*10
y=30