1) If a chord, which is not a tangent of the parabola y2=16x has the equation 2x+y=p, and mid-point (h,k) then which of the following is(are) possible value (s) of p,h, and k? A) p=-1,h=1,k=-3 B) p=2,h=3, k=-4 C) p=-2,h=2,k=-4 D) p=5,h=4,k=-3 Answer: Option BExplanation:Equation of chord with mid point (h,k) T=s1 yk - 8x - 8h = k2 - 16h $2x-\frac{yk}{4}=2h-\frac{k^{2}}{4}$ $\because$ 2x + y = p $\because$ k = -4 and p = 2h-4
