b. The equation $\log _{6}(216)=3$ can be written in the form $b^{x}=y$ where: ० $b=$ Preview ㅇ. $x=$ Preview ㅇ $y=$ Preview

Step 1 ：The given equation is in logarithmic form. To convert it to exponential form, we use the formula $b^{x}=y$, where $b$ is the base of the logarithm, $x$ is the value of the logarithm, and $y$ is the argument of the logarithm. In this case, $b$ is 6, $x$ is 3, and $y$ is 216.

Step 2 ：Final Answer: $b=$ \(\boxed{6}\), $x=$ \(\boxed{3}\), $y=$ \(\boxed{216}\)