For what x-value in [-4,6] is the function undefined?

Question

The points on the graph are: (-4,-3), (0,0), (2,-2), (4,0), and (6,2)

The point (2,-2) is an open dot and the other points are filled dots. Does that mean (2,-2) is undefined?

Answer 1

Yes. If a function doesn't exist at a particular place, it is "undefined". An open dot means the function doesn't have a value at (2,-2). It is undefined there.

Hope this helps!

Liz Z.