If the polar point (r, 0) has r > 0 and -T

If the polar point (r, 9) has r > 0 and r < 9 < r/2, then which quadrant(s) could this point be in? Justify your answer. If the polar point (r, 9) has r < 0 and 37/2 < 9 < 2m, then which quadrant(s) could this point be in? Justify your answer.