## Algebra 1: Common Core (15th Edition)

We are given $2x+4y=12$ $\rightarrow x+2y=6$ $\rightarrow y=\frac{-1}{2}x+3$ The slope of the line is $\frac{-1}{2}$. To find the perpendicular slope: $\frac{-1}{m}$ = $\frac{-1}{\frac{-1}{2}}=2$