3.2.12 Lines On a Plane

Condition: two lines are given on the plane: \ (p: x+2 y-1 = 0 \) and \ (Q: 3 x+y-2 = 0 \): a) to find out whether at least one of the bisectors of the angles formed by these straight ones through the beginning of the coordinates; b) make an equation of one of these bisectors; c) Find the angle of inclination straight \ (p \) to the axis \ (o x \).