116 Algebra
posted by Denay on .
Describe what the graph of interval [4,10] looks like.

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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).