(a) Suppose the vector (2, b) and the line 3m + 5y 2 7 are parallel. Find 5. Is 45 unique? (b) Find a vector that is perpendicular to the line 33: + 53'; = 7. Explain your answer. I c) Find the point Q($, y) such that the vector 1362) from the point P(1: 1) to the point Q is parallel to the line 3x + 5;; = 7 and |ETQ)| = 4