A private plane and a jetliner both fly over a park that is at (−2, 2) on the map. The path of the jetliner follows the line LaTeX: y=\frac{1}{2}x-3 y = 1 2 x − 3 . The private plane flies perpendicular to the jetliner. What is the equation in slope-intercept form of a line that represents the private plane’s flight path?