What is the equation in point−slope form of the line passing through (1, 2) and (2, 5)? (5 points) a.) (y − 2) = −3(x − 1) b.) (y − 2) = 3(x − 1) c.) (y − 1) = −3(x − 2) d.) (y + 2) = 3(x + 1)