Question

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

Answer 1

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.

Answer 2

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)