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NationalTutoringObservatory
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MathEd-PII

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8
volunteer
because a negative times negative is a positive, negative, is negative.
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volunteer
Huh
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volunteer
Yes
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student
00, so like when it's going this way, we always do less than the number and then we do win the numbers.
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volunteer
Yup
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student
and then we do greater than the numbers.
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volunteer
Yup, because it would equal 0 at those numbers.
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student
Yeah
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student
So
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student
um this will be, so
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student
we could use one, right? No negative 1, right?
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volunteer
Yup.
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student
So negative, this will be a negative.
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volunteer
Mhm
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student
Uh
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student
this should be positive
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volunteer
Yup
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1,029
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student
This would be 0
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volunteer
No, cause it's -1, -1 -1 is
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student
00, negative so, so negative.
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volunteer
yup, so what would it be
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student
So negative, positive, negative.
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volunteer
Mhm.
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student
Negative from positive is a negative so positive.
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volunteer
Yup
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volunteer
Good job.
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student
Wait, how are we gonna use a number, or do we do 0.5?
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volunteer
Between 0 and 1, 0.5 would work.
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student
Yeah.
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student
So this will be positive.
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volunteer
Yep
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1,043
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student
This will be positive.
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volunteer
Uh-huh.
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student
OK.
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volunteer
And then that number is less than 1, so that'd be negative, right?
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volunteer
So what
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student
negative, yeah, so positive and positive is a positive, some negative, it's negative.
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volunteer
Yeah, good job
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student
So
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volunteer
And so the next one is greater than one, so it would be a positive number.
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student
so this will be 2
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student
oh with these two, right? So it's 2 positive.
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student
positive
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student
and positive
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volunteer
Uh-huh
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volunteer
Good job
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student
6.
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student
Well, let me see how much I have left.
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student
bro
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volunteer
Hm
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volunteer
You seem to be doing well so far.
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student
hopefully I don't forget this on the sense.
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student
So
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student
draw a glass in the time.
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volunteer
Mm.
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student
All right. I'm just just doing this.
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volunteer
Let's see. So, draw a graph of a polynomial with the x intercept. so we know what the X intercepts are, right?
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student
Yeah.
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volunteer
So, mark those down first.
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student
Yeah
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student
oops
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volunteer
there a way you can
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volunteer
there we go
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volunteer
So what is it? 2/3?
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student
but.
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student
it's a lot of
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student
It's like you have to draw the graph, I think.
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volunteer
Yeah, but it has to be negative below that number, right?
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student
So 6
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volunteer
everywhere else
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student
So below -6 would be like
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student
and then a both father 6.
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volunteer
Wait, did we make sure that that 3rd 1 was positive.
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student
they
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student
So would it be like this?
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student
like
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student
Which one
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volunteer
Wait, are we sure that number, that 3rd number is positive. It was
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volunteer
Um, between -4 and
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volunteer
1.
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student
What
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volunteer
Oh, number one, OK. So make the X intercepts. So what would the X intercepts be here?
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student
64 and 1.
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volunteer
Mhm. And so that means it would pass through -6, right, because it's going negative to positive.
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student
Yeah
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volunteer
And then it would bounce off -4.
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volunteer
because it's positive to positive, and then it would bounce off again at one because it's positive to positive.
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volunteer
Does that make sense
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volunteer
That looks right
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volunteer
Was that not
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volunteer
It's a -6, so pass through is a -6.
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volunteer
It would bounce off at is that 4, yep, 4, bounce off.
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volunteer
And then it would bounce off again at, does that say one?
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volunteer
and then go up from there
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volunteer
That should be right. And if it's not, that's not on you.
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student
This because it's not touching before.
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student
That's why
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volunteer
You should be right there. I don't care what that says.
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student
There'll be, oh wait, what?
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volunteer
Yeah, that's
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