Question

9) Given that y is inversely proportional to (x + 3)^2 and that y = 5 when x = 2.
(a)Find the value of y when x = 1/2
(b) Find the values of x when y = 45

Answer 1

Answer:

We have to check if the numbers are inversely proportional

For this we know that two numbers x and y are inversely proportional is y=

x

1

So, for x and y to be inversly proportional xy=Constant

6×9=54

10×15=150

14×21=294

16×24=384

Since the values obtained are not equal

∴x and y are not inversely proportional