An isosceles triangle has 2 sides equal in length. One of the equal sides of this triangle is 3m less than twice the base of the triangle. If the perimeter of the triangle is 44m, what is
the length of all 3 sides?

Answer :- 1.The focus is located at (0,–3).

4.The parabola can be represented by the equation x2 = –12y.

Explanation:-

Given:- A parabola, with its vertex at the origin, has a directrix at y = 3.

⇒ the parabola is symmetric to the y -axis and opens to the downwards as it opens opposite to the directrix.

and focus is located at (0,-3) as for directrix y=a focus =(0,-a)

⇒The parabola can be represented by the equation with a=3

p=distance between the vertex and focus=|-3-0|=3 units

Thus options 1, 4 are correct.