here's an easy one for starters...

what means greater or equal to on a number line, a closed dot or an open dot?

open dot.

it is a closed dot, 1000% sure!!!!!!!!!

To determine whether greater or equal to on a number line is represented by a closed dot or an open dot, you need to understand the concept of inequality.

On a number line, an open dot represents "greater than" and a closed dot represents "greater than or equal to."

When a number is greater than another number, but not equal to it, we use an open dot. This indicates that the endpoint does not include the number itself, just the range of numbers greater than it. For example, if we have the inequality x > 3, we would represent this on a number line with an open dot at 3, indicating any number greater than 3.

On the other hand, when a number is greater than or equal to another number, we use a closed dot. This indicates that the endpoint includes the number itself, as well as all the numbers greater than it. For example, if we have the inequality x ≥ 3, we would represent this on a number line with a closed dot at 3, indicating any number greater than or equal to 3.

Therefore, in the case of "greater or equal to" on a number line, a closed dot represents the concept.