Question

y inversely as x and y is = 12 when x is 5 find the value of y when x is 10​

Answer 1

Step-by-step explanation:

Value of y when x is 10 = 12/5 X 10 = 24

Answer 2

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Step-by-step explanation:

The initial statement is

$y \infty \frac{1}{x}$

To cover to an equation multiply by k the constant if variation

$y = k \times \frac{1}{x } = \frac{k}{x}$

To find k use the given condition

x = -12 when y = 5

$y = \frac{k}{x}$

$k = xy = - 12 \times 5 = - 60$

equation is

$y = \frac{60}{x}$

when y = 10

$x = - \frac{ 60}{y} = - \frac{60}{10} = - 6$