Question

For the inverse variation equation xy=k, what is the constant of variation, k, when x=-2 and y=5?

-10
-2/5
5/2
10

Answer 1

-10

Explanation:

xy = k

(-2)(5) = k

-10 = k

Answer 2

Answer: -10

Explanation:

Given: The inverse variation equation is given by :-

`xy=k`

To find : The constant of variation, k, when x=-2 and y=5

Substitute the given values of x and y in the given inverse equation , we get

`-2* 5=k\\\\\Rightarrow\ k=-10`

Hence, the value of constant of variation = -10