Question

If y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8​

Answer 1

Y varies directly as X.

y=kx.

6=K72.

x=6/72.

x=0.08.

Y=0.08x.

when y=?, x=8.

y=0.08×8=0.64.