Help me graph and find the following vertex, focus, directrix, length of latus rectum, and upper and lower end point of latus rectum (units not needed except for the latus rectum): 1.) y^2 = 20x 2.) x^2 = -4y 3.) (y-4)^2 = 8(x-3) 4.) (x+6)^2 = -20 (y-5)