2) Obtain the equations of the parabola in the following cases a) vertex at (-1,2) and directrix x = 4 b) vertex at (-1,1) and directrix y = 3 c) focus at (1,2) and directrix x = -3 e) focus at (-3,4) and directrix y = -4 and directrix 2x – y + 5 = 0​