Lines 2 and 3 have the same slope, 3, but have different y-intercepts. So, they are parallel
Line 1 can be written as y = (-1/3)x + 2. This line has slope -1/3 = -1 / (slope of line 2 or 3)
So, Line 1 is perpendicular to line 2 and line 1 is perpendicular to line 3.