Question

y is inversely proportional to the square of x.

A table of values for x and y is shown.

Х| 1 2 3 4
Y| 4 1 4/9 1/4

a) Express y in terms of x.
b) Work out the positive value of x when y = 25

Answer 1

Answer:

$a) \: y = \frac{4}{ {x}^{2} }$

$b) \: x = \frac{2}{5}$

Step-by-step explanation:

Please see the attached pictures for the full solution.