Question

look at this graph:
graph of a parabola opening downward with vertex at (0, 4) or similar? wait, the graph shown has vertex at (0,4)? wait, the users graph: the y-axis has 5 at the top, and the vertex is at (0,4)? wait, no, the original graph: the y-axis is labeled 10, 5, 0, -5, -10. the parabolas vertex is at (0,4)? wait, no, the text says what is the maximum value of this function? the graph is a parabola opening downward, vertex at (0,4)? wait, maybe the vertex is at (0,4). wait, the ocr text: look at this graph:
the graph as described: coordinate plane with x from -10 to 10, y from -10 to 10, parabola opening downward, vertex at (0,4)? or (0,5)? wait, the y-axis has 5 marked. wait, the graphs vertex is at (0,4)? no, maybe the vertex is at (0,4). wait, the ocr text: what is the maximum value of this function?
so the ocr text is: look at this graph:
the graph image
what is the maximum value of this function?
input box

Explanation:

Step1: Identify vertex of parabola

The graph is a downward-opening parabola, so its vertex is the maximum point. The vertex is at $(0, 4)$.

Step2: Extract y-value of vertex

The maximum value of the function is the y-coordinate of the vertex.

Answer:

4