Can someone explain to me.... when you are graphing number sets.... when do you use open/ closed cirles.... When do you use arrows?... What are intergers???
Thanks,
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i don't like mathhh its kinda y
can u stop... you are not helping...
BYE!
I'm not exactly sure what your terminology refers to. Do you mean open and closed intervals?
The integers are ...-3,-2,-1,0,1,2,3...
What class is the for?
yes open and closed intergers....
No, I asked if it was open/closed intervals, no integers.
When we specify an open interval we use the parentheses ( and ). We use those when we want to exclude the endpoints, thus (1,2) is the set of points between 1 and 2, but niether 1 or 2.
For closed intervals we use [ and ], brackets. Thus [1,2] is the closed interval and means all point from 1 to 2 inclusive.
We can have half-open/closed or half-closed/open intervals too. Thus (1,2] means all points greater than 1 and less than or equal to 2. [1,2) is all points greater than or equal to 1 and less than 2.
Thank you for clarifying! It seems like you are asking about using open and closed circles when graphing number sets on a number line.
In graphing number sets, open and closed circles are used to indicate whether or not the endpoints are included in the set. Let me break it down for you:
1. Open circles:
- An open circle (∘) is typically used to represent that a specific number is not included in the set.
- For example, if you have the set {x | x > 3}, you would graph this as a number line with an open circle at 3, to indicate that 3 is not included in the set.
2. Closed circles:
- A closed circle (●) is used to represent that a specific number is included in the set.
- For example, if you have the set {x | x ≤ 5}, you would graph this as a number line with a closed circle at 5, to indicate that 5 is included in the set.
3. Arrows:
- Arrows are used to indicate that the set continues indefinitely in a specific direction.
- For example, if you have the set {x | x > 2}, you would graph this as a number line with an open circle at 2 and an arrow pointing to the right, indicating that the set contains all numbers greater than 2.
In summary, open circles (∘) indicate that the endpoint of a set is not included, closed circles (●) indicate that the endpoint is included, and arrows indicate that the set continues indefinitely in a specific direction.
I hope this clears up your confusion! If you have any more questions, feel free to ask.