Solve the system of equations. 3x-y=2 x+3y=19 Find x from the second one x=19-3y Plug it in the first one 3(19-3y)-y=2 57-9y-y=2 55=10y Y=5.5 Now find x: x=19-3*5.5=2.5 So, the coordinates of p is (2.5,5.5), since this is the point that is on both lines.