Question

what is the vertex of the graph? (2, 4) (3, -1) (0, 8) (4, 2)

Explanation:

Step1: Identify vertex definition

The vertex of a parabola is its minimum/maximum point.

Step2: Locate the parabola's lowest point

From the graph, the lowest point is at $x=3$, $y=-1$.

Answer:

B. (3, -1)