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b) $\newline$$y=\pm\frac{16}{14}(x)$$\newline$Find the common ratio of the geometric sequence $\newline$$\{a_{n}\}_{n=1}^{\infty}$ given that:$\newline$\begin{align*}\(\newline&\left\{\begin{array}{l}$\newline$-\frac{1}{4}=a_{1}+d \quad d=-\frac{1}{4}-a_{1},(\newline\)a_{2}=-\frac{1}{4},(\newline\)a_{6}=-\frac{12}{243}$\newline$\end{array}\right.$\newline$\end{align*}\)