Graph the image of the given triangle, reflected across the y-axis. Select the Polygon tool. Then, click the points of the triangle vertices to create the triangle by connecting the sides. Keyboard Instructions Initial graph state The horizontal axis goes from -10.8 to 10.8 with ticks spaced every 1 unit(s). The vertical axis goes from -10.8 to 10.8 with ticks spaced every 1 unit(s). Polygon with coordinates: (-2, -9), (7, -4), (9, -7), (-2, -9).