Asked by MATH DUDE

Explain how to know wheather the endpoint of the graph of an inequality should be a closed dot or an open dot.
Answered by Jen
It should be an open dot because it's an inequality. It would be a closed dot if it was an equality, such as x=3.
Answered by Reiny
If the inequality contains either ≤ or ≥, then close the dot of the endpoint, since that point is included in the graph.

If the inequality contains eitehr < or > , then leave the dot open to show that the endpoint itself is not included in your graph.
Answered by kim
yes! if it is addition or subtraction you have an open dot! if it multiplication or division than a closed dot!
Answered by 3 x<−3, would you use a closed dot or an open dot?
3
x<−3, would you use a closed dot or an open dot?
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