Question: graph: 12. Dominic and Michael are working on their math together. Dominic creates the following x + 2 for the function y = x2 -

graph: 12. Dominic and Michael are working on
graph: 12. Dominic and Michael are working on their math together. Dominic creates the following x + 2 for the function y = x2 - 4 but Michael doesn't understand why there is a large red circle at x = 2 or why Dominic drew dotted horizontal and vertical green lines. How could Dominic explain this to Michael

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