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If the question is about xy = 7, then it is an equation of an inverse relationship. This is NOT the same as an inverse equation.
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The equation is xy = 22.5
The equation is xy = k where k is the constant of variation. It can also be expressed y = k over x where k is the constant of variation.
The inverse variation is the indirect relationship between two variables. The form of the inverse variation is xy = k where k is any real constant.
inverse of 7
If y varies with x, then there cannot be an inverse variation between x and y!