Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line. A line and a dot are graphed on a coordinate plane. The x-axis ranges from negative 1 to 7, in increments of 1. The y-axis ranges from negative 5 to 3, in increments of 1. The line passes through the points at ordered pair 0 comma negative 4 and ordered pair 2 comma 2. A dot is at ordered pair 6 comma 2.