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NationalTutoringObservatory
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MathEd-PII

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8
volunteer
Good.
16,453
1,813
[]
student
So negative and positive is negative, times positive.
16,453
1,814
[]
student
negative. So the first one is positive.
16,453
1,815
[]
volunteer
Probably, I don't know
16,453
1,816
[]
student
Mm
16,453
1,817
[]
volunteer
I'm not doing it. It's up to you
16,453
1,818
[]
student
Yeah
16,453
1,819
[]
student
So
16,453
1,820
[]
student
mhm
16,453
1,821
[]
student
3.
16,453
1,822
[]
student
no
16,453
1,823
[]
student
positive
16,453
1,824
[]
student
positive
16,453
1,825
[]
student
symptoms
16,453
1,826
[]
student
so sometimes.
16,453
1,827
[]
volunteer
wow
16,453
1,828
[]
student
huh
16,453
1,829
[]
student
0 times 3 is 0, so.
16,453
1,830
[]
student
40
16,453
1,831
[]
student
3 times 20 yeah, cause if it's not greater, if it's not greater than 3.
16,453
1,832
[]
student
Wait, so
16,453
1,833
[]
volunteer
It's rarer than or equal to it looks like.
16,453
1,834
[]
student
Oh, if it's not greater than if it's not greater than 2.
16,453
1,835
[]
student
It was not greater than 2, then it can't be positive.
16,453
1,836
[]
student
So that's negative. This is gonna be positive.
16,453
1,837
[]
student
positive
16,453
1,838
[]
student
Mother, positive, positive.
16,453
1,839
[]
student
we
16,453
1,840
[]
student
positive
16,453
1,841
[]
student
such positive, positive.
16,453
1,842
[]
student
positive.
16,453
1,843
[]
student
Those nes
16,453
1,844
[]
student
negative.
16,453
1,845
[]
student
Yes, I got it right.
16,453
1,846
[]
student
OK, now, inequality.
16,453
1,847
[]
student
OK, so this will be
16,453
1,848
[]
student
bracket
16,453
1,849
[]
volunteer
Uh, you wanna look at that one more time?
16,453
1,850
[]
student
Um
16,453
1,851
[]
volunteer
It's everything to the left of 2, right? You just have to do it, um, from the lowest value to the most value. It's a like number thing.
16,453
1,852
[]
student
OK.
16,453
1,853
[]
student
It's, is, isn't it to an infinity?
16,453
1,854
[]
student
Wait, is it
16,453
1,855
[]
volunteer
Not infinity cause you see to the right it's negative.
16,453
1,856
[]
student
Yeah
16,453
1,857
[]
volunteer
So it'd be that all the numbers leading up to 2 and then 2.
16,453
1,858
[]
volunteer
So what's all the numbers behind 2?
16,453
1,859
[]
student
Negative
16,453
1,860
[]
volunteer
negative
16,453
1,861
[]
student
00, behind that?
16,453
1,862
[]
volunteer
Uh-huh
16,453
1,863
[]
student
So like right here it's positive.
16,453
1,864
[]
volunteer
Yeah, cause it's positive from everything leading up to 2, you say, right?
16,453
1,865
[]
volunteer
So what would all those numbers be?
16,453
1,866
[]
volunteer
Any number lower than 2.
16,453
1,867
[]
student
negative
16,453
1,868
[]
student
No, positive
16,453
1,869
[]
volunteer
It would be negative infinity, right?
16,453
1,870
[]
student
What
16,453
1,871
[]
volunteer
Because all the numbers are lower than 2
16,453
1,872
[]
volunteer
You see, even if it's positive, the X value you're still plugging in is negative, right?
16,453
1,873
[]
student
Mhm.
16,453
1,874
[]
volunteer
So it would be
16,453
1,875
[]
volunteer
what's going up 22.
16,453
1,876
[]
student
So
16,453
1,877
[]
student
yeah
16,453
1,878
[]
volunteer
Because if you plug in any number lower than 2, it would be positive, right?
16,453
1,879
[]
student
to do.
16,453
1,880
[]
volunteer
Sorry, repeat that
16,453
1,881
[]
student
greater than or equal to zero.
16,453
1,882
[]
volunteer
Uh-huh, that's what the equation says. So where is it showing that it's all greater than or equal to 0.
16,453
1,883
[]
volunteer
You see how it's positive, positive, positive, positive.
16,453
1,884
[]
volunteer
You see how it's positive all the way to the left.
16,453
1,885
[]
volunteer
That means that negative infinity.
16,453
1,886
[]
volunteer
up to up to 2
16,453
1,887
[]
volunteer
right?
16,453
1,888
[]
student
Mhm
16,453
1,889
[]
volunteer
Does that make sense
16,453
1,890
[]
volunteer
So what would that one be
16,453
1,891
[]
volunteer
Remember negative infinity has to be in a soft bracket.
16,453
1,892
[]
student
Oh
16,453
1,893
[]
volunteer
cause you can't reach infinity. And then 2 would be in a hard bracket because you can't equal zero.
16,453
1,894
[]
volunteer
Good
16,453
1,895
[]
student
OK
16,453
1,896
[]
volunteer
Now, I don't know if you did the top thing right. I was just helping you with the bottom one.
16,453
1,897
[]
volunteer
So I would check that again cause I'm not sure what you did, cause I'm not doing it.
16,453
1,898
[]
student
oh
16,453
1,899
[]
student
6
16,453
1,900
[]
student
positive.
16,453
1,901
[]
student
positive
16,453
1,902
[]
student
negative
16,453
1,903
[]
student
negative test positive.
16,453
1,904
[]
student
positive negative.
16,453
1,905
[]
student
times negative is positive.
16,453
1,906
[]
student
Uh
16,453
1,907
[]
student
one
16,453
1,908
[]
student
6
16,453
1,909
[]
student
positive
16,453
1,910
[]
volunteer
You're making sure to look at the squares and fours.
16,453
1,911
[]
student
Yeah
16,453
1,912
[]