Posted by **Denay** on Friday, March 27, 2009 at 4:03pm.

Describe what the graph of interval [-4,10] looks like.

- 116 Algebra -
**Larry**, Friday, March 27, 2009 at 6:16pm
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Describe what the graph of interval[-4,10] looks like.

A square bracket means that the interval includes that endpoint. Since in your problem both brackets are square, both endpoints are included. This interval goes from -4 to 10 and includes the endpoints -- on a number line, you fill in those endpoints. Alternatively, instead of filling in the endpoints, you can draw a bracket at -4 and another bracket at 10.

If the interval had included parentheses, you would not have filled in the circles (or if you used brackets/parens, you would have put a paren on the number line).

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