1 Answer

Antony Mativos · Answer 1 · 2021-01-25T10:32:14+0000

Answer:

y = 7/2

Explanation:

The above statement is written as

$y = \frac{k}{ {x}^(3) }$

where k is constant of variation

y = 28 x = a

$28 = \frac{k}{ {a}^(3) } \\ \\ k = 28 {a}^(3)$

The formula for the variation is

$y = \frac{28 {a}^(3) }{ {x}^(3) }$

when x = 2a

y is

$y = \frac{28 {a}^(3) }{( {2a)}^(3) } \\ y = \frac{ {28a}^(3) }{ {8a}^(3) } \\ \\ y = (28)/(8) \\ \\ y = (7)/(2)$

Hope this helps you