Question

Y is inversely proportional to x.when x =3,y=24.

a)find a formula for y in terms of x.
b)hence or otherwise
i.calculate the value of y when x=6
ii.calculate the value of x when y=4.8

Answer 1

1200 because you multiply by 8 or 16/2

Explanation:

Answer 2

Y = k/x
24 = k/3
K = 72
a) Formula = y = 72/x


i) y = 72/6
y = 12


ii) 4.8 = 72/x
x = 72/4.8
x = 15

Hope this helps