A better idea would be to show some effort - what have you tried? Where are you stuck?
The genral equatiion of a plane is Ax+By=Cz=D, where A,B,C, and D are all real numbers and A is nonnegative. Find the equation ofthe plane containing the points (3,0,0), (0,8,0), and (0,0,3). Show each step of your process. Then graph the plane