Solve for x
x=\frac{y^{2}}{16}
y\geq 0
Solve for x (complex solution)
x=\frac{y^{2}}{16}
arg(y)<\pi \text{ or }y=0
Solve for y
y=4\sqrt{x}
x\geq 0
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4\sqrt{x}=y
Swap sides so that all variable terms are on the left hand side.
\frac{4\sqrt{x}}{4}=\frac{y}{4}
Divide both sides by 4.
\sqrt{x}=\frac{y}{4}
Dividing by 4 undoes the multiplication by 4.
x=\frac{y^{2}}{16}
Square both sides of the equation.
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