Answer:
-7,0,5,8
Step-by-step explanation:
Just try to visualize it. If a function is reflected across the x-axis, that means that positive values are flipped and become negative and negative values become positive.
So, g(x)=-f(x).
Answer:
Step-by-step explanation:

Yes, the point near 10 is an outlier because it is a variable far away from the others, it may effect your answer (if needed).