Posted by **Mike** on Thursday, October 15, 2009 at 11:00pm.

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

- Algebra 1 -
**Alyson**, Thursday, October 15, 2009 at 11:04pm
You would plot a dot at -4 on the x line(which is the horizontal line) on the left side of the graph, and you would plot a dot at 10 on the y line-which is the vertical line and the positive numbers are above the horizontal x-line.

- Algebra 1 -
**MathMate**, Thursday, October 15, 2009 at 11:34pm
If I understand correctly that you need the graph of the interval [-4,10], then it should be plotted on the number line, basically the x-axis.

Since [-4,10] is the same as

-4 ≤ x ≤ 10,

we start by joining -4 and 10 on the number line with a thick line. Since -4 and 10 are both included in the interval (indicated by the square brackets [ and ]), you would plot a dark, filled small circle at -4 and 10 to indicate that the two values are included in the interval.

For extra leisure reading about intervals, there is an excellent article:

http://en.wikipedia.org/wiki/Interval_(mathematics)

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