## anonymous one year ago Z varies directly with x^2 and inversely with y . When x=2 and y=4, z=3 What is the value of z when x =4 and y=9 A 16/3 B 24 C 2/3 D 8/3 Someone please help me

i think you mean: $$\large z = k {x^2 \over y}$$ so work out $$k$$ from the givens, then solve....