What best compares the graphs y=-3x^n and y=3x^n

Answer: The graph of y=-3x^n is the reflection of the graph of y=3x^n about the y axis

Explanation:

Name: f (x) = - 3 x^n and g (x) = 3 x^n. then f (x) = - g (x).

That means that for a given value of x the output of g (x) is the negative of the value of f (x), which is what you obtain when you reflect the function g (x) across the x axis.