H:a2x2−b2y2=1Focus of parabola : (ae,0)Directrix : x=−ae.Equation of parabola ≡y2=4aexLength of latus rectum of parabola =4aeLength of latus rectum of hyperbola =a2⋅b2as given, 4ae=a2b2⋅e2=a2b2… (i)∵ H passes through (22,−22)⇒a28−b28=1…. (ii)From (i) and (ii) a2=4 and b2=8⇒e=3⇒ Equation of parabola is y2=83x.