Question

Question #e9a06

Answer 1

Let f = x. That will make it simpler. A "number line" as opposed to a Cartesian Plane is usually the "x-axis".

Explanation:

It could be "y" too.. the labels are just conventions, they are not absolute, but it does help to use the conventions so everyone has the same perspective.

As an "x" value, the inequality `>3` would be a vertical dashed line at the "3" point of the number line (x-axis) with the area to the right of it shaded.

The inequality `<-2` would be a vertical dashed line at the "-2" point of the number line (x-axis) with the area to the left of it shaded.