# If y varies inversely as x, how do you find the constant of variation if y = 5 when x = -1?

To find the constant of variation, we can use the formula for inverse variation: y = k/x.

Given that y = 5 when x = -1, we can substitute these values into the formula: 5 = k/(-1).

To solve for k, we can multiply both sides of the equation by -1: -5 = k.

Therefore, the constant of variation is -5.

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So by substitution

So the equation is:

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