Answer:
(5, 1)
Explanation:
The vertex is the turning point on the graph. Its coordinates are read from the axes labels.
Vertex
The term vertex is used in several different contexts. A vertex of a polygon is a point where edges meet. A vertex of a curve is an extreme value of the curve.
When applied to an ellipse, the vertices are the ends of the major axis. The ends of the minor axis are the co-vertices.
Parabola
The vertex of a parabola is the extreme value of the parabola. When it opens downward, as here, the vertex is the point where the curve is at its maximum.
As with any point on any graph, the coordinates of the vertex are read from the labels of the axes. The horizontal coordinate is customarily listed first.
The vertex is (x, y) = (5, 1).