# Assume that y varies inversely as x. If y = 7 when x = -3, how do you find y when x = 7?

To find y when x = 7, we can use the inverse variation formula. First, we need to determine the constant of variation, denoted as k. Inverse variation is represented by the equation y = k/x.

Given that y = 7 when x = -3, we can substitute these values into the equation to solve for k:

7 = k/(-3)

To find k, we can multiply both sides of the equation by -3:

-21 = k

Now that we have the value of k, we can substitute it into the inverse variation equation and solve for y when x = 7:

y = k/x y = -21/7 y = -3

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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