Solve for y
y=\frac{9}{x}
x\neq 0
Solve for x
x=\frac{9}{y}
y\neq 0
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xy=9
Variable y cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by y.
\frac{xy}{x}=\frac{9}{x}
Divide both sides by x.
y=\frac{9}{x}
Dividing by x undoes the multiplication by x.
y=\frac{9}{x}\text{, }y\neq 0
Variable y cannot be equal to 0.
Examples
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Limits
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