To graph the combination of the functions F(x) = 2x and G(x) = x + 1, first plot each function on a coordinate plane. For F(x), start at (0,0) and plot points like (1,2) and (2,4), while for G(x), begin at (0,1) and use points like (1,2) and (2,3). Next, add the corresponding y-values of each function to find points for the combined graph, resulting in points like (1,4) and (2,7). Connect these points to create a straight line representing the combined function F + G = 3x + 1, which has a slope of 3 and a y-intercept of 1. This method effectively illustrates how to graph the combination of two functions.