Answer:
Both of them are correct.
Step-by-step explanation:
Isaac says that for the function, between x = -1 to x = 1, the average rate of changes is 0.
When a function has the average rate of change = 0 i.e. [tex]\frac{dy}{dx}=0[/tex],
We get that the function will have an extrema point i.e. a point at which the function will have the largest or smallest value i.e. the graph of the function changes its direction.
Further, Noah states that between x = -1 to x = 1, the graph goes up through a turning point and then goes back down.
This means that in x = -1 to x = 1, the function attains the maximum value at some point through which graph is changing its direction from upwards to downwards.
As, both Isaac and Noah are stating that there is a point in x = -1 to x = 1, at which the function attains its maximum value and the graph changes its direction.
Hence, both of them are correct.
