Question

Write an inverse variation equation that relates x and y if y=-7 when x=-3 find y when x=-3

Answer 1

y = 21/x

y = -7

Explanation:

y = k/x

-7 = k/-3

k = -7×-3 = 21

y = 21/x

y = 21/-3

y = -7

Answer 2

-7

Explanation:

Inverse variation is characterized by the equation: y = k/x, where k is a constant.

Here, we're given values of y and x, so let's use them to find k:

y = k/x

-7 = k/(-3)

k = (-7) * (-3) = 21

Our equation is now: y = 21/x

Finally, plug in -3 for x:

y = 21/(-3) = -7

The answer is -7.