Chapter 12 - Matrices - 12-1 Adding and Subtracting Matrices - Practice and Problem-Solving Exercises - Page 770: 40

\begin{align*} \text{Slope: }&m=2 \\y-\text{intercept: }& -6 \end{align*}

The Slope-Intercept Form of the equation of lines, which is given by $y=mx+b,$ has slope $m$ and $y$-intercept of $b$. With the given equation, $ y=2x-6 ,$ then \begin{align*} \text{Slope: }&m=2 \\y-\text{intercept: }& -6 .\end{align*}