(a) find a parametric representation of the plane that passes through the points (2,-3,7), (0,3,-1) and (2,0,5)

(a) find a parametric representation of the plane that passes through the points (2,-3,7), (0,3,-1) and (2,0,5) 

(b) find the equation of the plane in Ax+By+Cz=D