The Focus is located within the curve of the parabola. Please refer to the illustration below.
Since we can't find the image in this problem, let's talk about parabola in a general sense. Parabola is one of the conic sections discussed in Precalculus. The study of a parabola is a vital concept for calculus.
Parabola is a locus of all points where the distances from any point on the parabola to a fixed point and from the same point on the parabola to a given line are equal. The fixed point is called the focus and the given line is called the directrix.
Parts of a Parabola
1. The parabola curve
4. Axis of Symmetry
5. Latus Rectum
Please refer to the illustration to find the location of the focus of the parabola. The focus is somehow located inside the parabola. It looks like being devoured by the parabola shape.