Answer:
(4,2)
Step-by-step explanation:
The vertex is either the highest or lowest point on the parabola. It is the highest if the parabola opens downwards. It is the lowest point if the parabola opens upwards. In this graph, the parabola opens downwards, so it is the highest point. The highest point is (4,2), so that is the vertex.
hope this helps! <3
