Which is the graph of the system of equations y = 3x + 6 and y = 3x +1? On a coordinate plane, one line goes through (negative 3, 0) and (0, 6) and another line goes through (negative 2, 0) and (0, 6). On a coordinate plane, one line goes through (negative 2, 0) and (0, 6) and another line goes through (0, 1) and (1, 4). On a coordinate plane, a line goes through (negative 2, 0) and (0, 6).