## anonymous one year ago I got this question wrong on my College Algebra test and i don't know why it is wrong. please help.

1. anonymous

Write in interval notation... $-7 \le x < 9$ and i put $[-7, \infty) (-\infty, 9)$ How is this wrong?

2. anonymous

@hartnn can you help explain this please

3. kropot72

Put into words, the expression says: x is equal to or greater than negative 7, and x is less than 9.

4. jackthegreatest

first of all, x does not go on to infinite

5. jackthegreatest

i just had this lesson in math

6. hartnn

which also means x is between -7 and 9 (-7 included) what you answered meant: x is greater than -7 till infinity, and x is less than 9 till -infinity

7. kropot72

You can find how to express this here: http://www.mathwords.com/i/interval_notation.htm

8. jackthegreatest

the answer should be [-7,9) i am almost certain

9. hartnn

|dw:1442686985618:dw|

10. jackthegreatest

@hartnn is right

11. kropot72

[-7, 9)

12. hartnn

|dw:1442687043917:dw|

13. anonymous

I don't need graphs.

14. hartnn

ok, what doubt you still have? :)

15. anonymous