What is the vertex of the parabola in the graph?

Parabolas always have a lowest point (or a highest point, if the parabola is upside-down). This point, where the parabola changes direction, is called the "vertex". If the quadratic is written in the form y = a(x – h)2 + k, then the vertex is the point (h, k).    

mark me brainlest

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)