A4. Which of the following equations defines a line parallel to the angle bisectors of the odd quadrants?
(A) $y=-3 x+3$
(B) $y=x+\frac{1}{3}$
(C) $y=-x-3$
(D) $y=\frac{1}{3} x+\frac{2}{3}$
(E) $y=-x+1$
A4. The bisector of the quadrants has a slope of 1. The line whose equation is $y=x+\frac{1}{3}$ has the same slope, so it is parallel to the bisector of the quadrants.