help please

Problem 2.4 Find parametric equations to represent the line segment from (-2, 7) to (3, -1). Problem 2.5 Find parametric equations for the path of a particle that moves along the circle x2 + (y - 1)2 = 4 in the manner described. (a) Once around clockwise, starting at (2, 1) (b) Three times around counterclockwise, starting at (2, 1) (c) Halfway around counterclockwise, starting at (0, 3)