Question

Find the equation of the parabola, in standard form, whose Vertex (2, 1), ends of the latus rectum (-1, -5) and (-1, 7).

Answer 1

No ideas on any of these?

Answer 2

The length of the latus rectum 4p=12

The focus is s=(-1,1)
The vertex is A=(2,1)
The equation of the parabola is (y-k)^2= - 4a(x-h)
(y-1)^2= -12(x-2)