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NationalTutoringObservatory
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MathEd-PII

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volunteer
If it's symmetrical over the Y axis, it would be even.
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student
um
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student
last one
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volunteer
OK.
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volunteer
The table below shows select values from the function F, which is odd, and whose domain is all real numbers, finds negative X of -9.
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volunteer
So, let's f-9?
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student
um hmm
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volunteer
If we're finding
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student
Hello
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volunteer
hello
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student
Yeah.
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volunteer
I can hear you
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student
You said it was fine. Yeah, you said it we're finding what?
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volunteer
So we're finding negative F of -9. I would show an example because I don't know how to do this.
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student
OK.
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volunteer
Oh, OK, because it's, I get it. So click X out.
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student
Uh-huh
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volunteer
So it's an odd function, right? Which means that it's reflected over the origin.
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student
Mhm
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volunteer
So if negative F of -9. So that means at 9 it's positive or at 9, it's positive 16, right? Because at 9, it's -16.
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volunteer
because the like just the the um symbols in front of them would switch, right?
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student
Yeah
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volunteer
So if it's negative F of -9, wouldn't it still be -16?
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volunteer
Because it would be positive 16 and the negative.
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volunteer
Does that make sense
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student
Wait, I
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student
wait
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student
How do you do negative F? I've never seen that before.
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volunteer
Uh, it would just be a negative answer of what the answer would be.
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student
Oh
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volunteer
So, OK, so you know how it's flipped over the origin, right?
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student
yeah
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volunteer
So if the X value is equal to 9,
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student
Mm.
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volunteer
So what would be, and if it's -16, then what would it be if it equals -9
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student
9
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volunteer
No, look at the Y value now. What would the Y value be if it equals -9.
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student
Mhm.
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volunteer
You know how like the X cubed function is mirrored on both sides.
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student
Yeah
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volunteer
Yeah, so you see how X equals 9?
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student
Yeah
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volunteer
So what would be if X equals -9, it would equal 16, right?
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student
Oh, you're right here. Oh yeah, I see.
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volunteer
Yeah, that makes sense, but it's negative, so the answer would be a negative version of positive 16.
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volunteer
which is
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student
So negative?
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volunteer
-16. Yeah, that makes sense.
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volunteer
And if it isn't, the question's wrong. No.
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student
What
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volunteer
I'm kidding
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volunteer
But
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student
find F of -9.
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volunteer
uh-huh, yeah, so what would F of -9 be? If F of 9 is -16.
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student
16.
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volunteer
Yep, and so it would be negative 16 because it's negative F of -9.
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student
Yeah
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volunteer
Congratulations
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student
Thank you so much.
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volunteer
No problem.
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student
So now I gotta go practice for a push.
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volunteer
Uh, I remember a that. I did that last year.
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student
Was it easy for you
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volunteer
It Wasn't hard. I got a 4
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student
OK, I took AP Psychology last year and I got a, I got a 2.
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student
Yeah
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volunteer
Oh, I got a 5 to many people.
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student
Well, thank you so much. You
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student
you helped me a lot
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volunteer
No problem. Have a good day.
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student
You too
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student
hi:)
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volunteer
great it worked!
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volunteer
let's finish this homework!
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volunteer
:)
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student
yes:)
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student
lets do question 1
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[ { "pii_type": "PERSON", "surrogate": "question 1", "start": 8, "end": 18 } ]
volunteer
ok great :)
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volunteer
so to do a percentage problem you take the percentage, turn it into a decimal, and then multiply it by the non-percentage number
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volunteer
so it would be 18% turns into 0.18
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volunteer
than we would multiply .18 by 500
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student
ok
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student
90
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volunteer
yes correct!!!
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student
so it would be 18/500
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student
i meant 90/500
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volunteer
no it would just be 90
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volunteer
because 500 is the whole number
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volunteer
and then we took a portion of that whole number
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volunteer
(the portion being 18%)
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volunteer
and then the portion of the original number ended up being 90
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student
oh okay
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volunteer
like if 18% of the students were boys and there were 500 students in total
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volunteer
then 90 of them would be boys
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volunteer
does this make sense?
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student
yes it does
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volunteer
great!
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student
:)
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volunteer
do u want to try it first or have me explain it?
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student
i can try
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