# The variables x=-0.3 and y=2.2 varies directly. How do you write an equation that relates the variables and find x when y=-5?

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The equation relating the variables x and y when they vary directly is ( \frac{x}{y} = k ), where k is the constant of variation. To find k, substitute the given values for x and y: ( \frac{-0.3}{2.2} = k ). Then, once you have k, you can use it to find x when y = -5: ( x = ky ).

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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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