The graphs of y - 2x = 1, 4x + y = 7, and 2y - x = -4 contain the sides of the triangle. find the coordinates and vertices of the triangle

First, before you graph this, you need to put in y=mx+b form. you would have y=2x+1, y=-4x+7, and y=1/2x-2. then you would create your graph charting these on the same graph, and wherever the lines intersect would be your vertices and your coordinates.