Question

Suppose that y varies inversely with x. Write an equation for the inverse variation.
Y=4 when X=7

(a) x= y/3
(b) y= x/28
(c) y=3x
(d) y= 28/x

Answer 1

y = k/x
4 = k/7
k = 28
y = 28/x
x = 28/y