Let I be the line with parametric equations x=-9+31 y=-4-31 z=-7 Find the vector equation for a line that passes through the point P (6.9, 9) and intersects L at a point that is distance 4 from the point Q-(-9,-4,-7). Note that there are two possible correct answers. Use the square root symbol 'V' where needed to give an exact value for your answer.