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skad [1K]
3 years ago
11

Can someone plz explain to me when to use an open and closed dot

Mathematics
1 answer:
balandron [24]3 years ago
5 0

closed dot is if the number is part of the solution so if it is equal to

 and

use open if it is not part of solution as in if it is greater than or less than

 so for your picture x greater or equal to -2 it would be a closed dot

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