Question

i need a picture or example of interval notation.

Answer 1

http://www.slideshare.net/marybiediger/interval-notation
it might help you

Answer 2

(3, 10)
\[(3, \infty)\]
\[(\infty, 3]\]

Answer 3

thanks

Answer 4

The last example given above is not an interval. The number on the left side must be smaller than the number on the right side. Infinity is much larger than 3. If there were a negative sign in front of the infinity sign it would be fine.

Answer 5

^oops, yes, sorry. typo.