Express c in Inequalities: -9 < c < -1 on Number Line

Question

$c$ is a negative number greater than -9 and less than -1 .

Write this as an expression using the number line below as an aid.

First, we'll mark the expression $C < 0$ on the number line:

Then we'll mark $C > -9$ :

Finally, we'll mark $C < -1$ :

Now we can see that the section marked in orange overlaps the expression:

The numbers that create the overlapping section are those from -9 to -1 and represent the expression in question:

$-9 < c < -1$

$-9 < c < -1$