Please help me solve this

Q: is the midpoint from directrix to C the focus?

determine the equation and graph of the ellipse w/ center at (4,-5), major axis vertical. eccentricity=√21/5 distance between directrices=50√21/21

(note: distance from C to a directrix = a/e or a^{2}/c) note (e = c / a)

Thanks in advance for the reply ^^