Question

y ∝ √ x If y = 42 when x = 9 find, x when y = 28

Answer 1

Step-by-step explanation:

as X =9 then it's square root is 3

now 42 is divided by 14 to get 3

so, y=28 is also divided by 14 to get 2

2=√x

taking square on both side

4=x