\((x_1;\ y_1);\ (x_2;\ y_2)\\The\ two\ points\ form:\\\\y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)\\---------------------\\(0;\ 4)\to x_1=0;\ y_1=4\\(1;\ 6)\to x_2=1;\ y_2=6\\subtitute\\\\y-4=\dfrac{6-4}{1-0}(x-0)\\\\y-4=\dfrac{2}{1}x\\\\y-4=2x\\\\\boxed{y=2x+4}\)
