Write an equation for the parabola that satisfies each set of conditions.
a) vertex (3, 4), opening downward with
a vertical stretch by a factor of 3

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

Having a hard time understanding this question (see attachment).

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)