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8
volunteer
Flipped over the wine
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volunteer
No, I, I guess it kind of is, but, uh, in, in this case, it's actually flipped over YNX, so you're not wrong.
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student
Why
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volunteer
But what I was looking, what's that?
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student
you said it's YNX?
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volunteer
In this case, it's Y and X It's an odd case, but
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student
Y.
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volunteer
yeah, you're, you're not, you're not wrong. But what I was looking for is a text.
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student
or why is it YNX?
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volunteer
OK, you see this line?
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volunteer
that I just drew on let me put it different.
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student
Uh-huh
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volunteer
Do you see what I'm drawing there, right
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student
Yeah
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volunteer
The blue line, you see it
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student
Yeah
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volunteer
Mentally flip it.
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volunteer
from the middle, flip it from this point.
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volunteer
Take this part
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volunteer
and put it this side. Just, just flip it.
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volunteer
Does it look like the back line
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student
Yeah
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volunteer
OK, now flip it upside down. What does it look like?
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student
Oh, it's still the same
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volunteer
Yeah, it looks like the black line. And if you flip it
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volunteer
it looks at the black line, if you put it this way, this looks like, looks like the black line.
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volunteer
So I'm trying to say is
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volunteer
you don't need to remember this, but no, you did this part you do. If there's a negative on the X, it would flip on the X-axis.
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volunteer
This thing right here
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volunteer
OK?
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student
Mhm
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volunteer
So, which, let me just zoom in on the graph.
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student
Mm
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volunteer
Can't really OK
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volunteer
right
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volunteer
OK
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volunteer
All you need to know
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volunteer
is a regular g uh regular graph with Y equals x, and the X is positive. If there's no minus, OK?
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student
OK
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volunteer
It should look like this.
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student
OK
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volunteer
So what should a negative look like? It should look like this. I'm gonna make this.
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volunteer
Yeah, there we go
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volunteer
OK.
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student
Mhm
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volunteer
Based on that information.
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volunteer
what should this one be? What should C be?
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volunteer
We know it can either be A or C for this one.
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volunteer
Got be this one or this one.
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student
It's
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volunteer
because they're both lines
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student
C
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volunteer
Why is it C
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student
cause it's going upwards.
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volunteer
What's the sound the X?
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student
Oh, it's negative. So it's actually going the opposite way.
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volunteer
So, which, what is the answer?
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student
A
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volunteer
OK.
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volunteer
So what you need to be thinking of is looking at the sign
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volunteer
is a negative? OK, then I know it has to be flipped.
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volunteer
There's only one answer where this has flipped.
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volunteer
It has to be it.
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volunteer
Another thing that you can do
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volunteer
there is this thing called Y intercept. Y intercept is if you take X to be 0.
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volunteer
whatever answer you get has to be along this line.
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volunteer
So if I take Y equals 8 x + 5.
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volunteer
OK.
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volunteer
If X was 0
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volunteer
what would Y be
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student
If what sorry
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volunteer
If X was 0.
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volunteer
what would I be
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student
0
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volunteer
Why, they use this equation plug it in.
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volunteer
You don't need me to write this down. If you, if you take X, just plug in 0.
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volunteer
What do you get
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student
I don't understand.
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volunteer
OK, you see this X
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student
Uh-huh
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volunteer
That X can be anything
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student
Yes
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volunteer
If it was 0
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volunteer
what would the answer give you if 8 times 0 + 5. What would that equal?
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student
It's because I don't have my calculator right now, so I'm gonna, sorry, I have
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volunteer
I'll need to calculator
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volunteer
It's 8 times 0
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student
0
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volunteer
What is 0 times -1
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student
0
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volunteer
So 00 + 5.
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student
5
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volunteer
Did did you need a calculator? No, you trust yourself. Yeah, you got this.
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volunteer
If you don't, if you, if you, if you keep telling yourself that you don't, you need a calculator. I mean, you're never gonna get it. You gotta use it. You, you got, you have talent. You gotta use it.
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volunteer
What I mean is if you plug in zero, the entire term cancels. You should be able to do it. Come on.
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volunteer
If you have
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volunteer
they'll all get what answer do we get? We get 5, right?
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student
Yeah
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volunteer
So we should get the point.
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volunteer
0.5, because when X is 0, my Y is 5.
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