Question

look at this graph:
what is the maximum value of this function?

Explanation:

Step1: Identify the peak point

The maximum value of a downward-opening parabola (the shape of this graph) is the y-coordinate of its vertex (the highest point on the curve).

Step2: Read the y-value of the peak

From the graph, the highest point of the curve has a y-value of 10.

Answer:

10