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OpenStudy (liv1234):
OpenStudy (liv1234):
OpenStudy (liv1234):
@hartnn @geny55
hartnn (hartnn):
whats the question ?
OpenStudy (liv1234):
Make a mapping diagram for the relation. {(-2,-6), (0,3), (1,-5), (5,0)}
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hartnn (hartnn):
ok,
so
the arrow that starts from -2 should go to -6
hartnn (hartnn):
similarly, the arrow starting from 0 goes to 3
and same for others
which option has that property ?
OpenStudy (liv1234):
C? And could you help me with another one? And i LOVE YOUR PROFILE PICTURE!
hartnn (hartnn):
C is correct :)
sure
yes, I love it too :D
OpenStudy (liv1234):
Okay, I'll post it. And it's kinda funny cause I was watching Dragon Ball this morning, I'm rewatching all the episodes cx
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hartnn (hartnn):
cool! :)
OpenStudy (liv1234):
OpenStudy (liv1234):
OpenStudy (liv1234):
OpenStudy (liv1234):
Okay, that's the one. Sorry for the multiple pictures.
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hartnn (hartnn):
which one do you think?
OpenStudy (liv1234):
I was thinking D, but I think I'm wrong.
hartnn (hartnn):
If you can draw a vertical line anywhere on
a graph so that it hits the graph in more
than one spot, then the graph is NOT a function.
OpenStudy (liv1234):
So, it's not D?
hartnn (hartnn):
nope, try C
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OpenStudy (liv1234):
So, C would be correct?
hartnn (hartnn):
yes :)
OpenStudy (liv1234):
Omg thank you(:
OpenStudy (liv1234):
Can you help me with one more? I think I have the answer, but I keep getting confused.
hartnn (hartnn):
sure
ask :)
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OpenStudy (liv1234):
Okay, I'll post it here. c:
OpenStudy (liv1234):
OpenStudy (liv1234):
OpenStudy (liv1234):
OpenStudy (liv1234):
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OpenStudy (liv1234):
The one I clicked is the one that I think is right
hartnn (hartnn):
where would be (3/2, 0) on the graph??
on x axis or on y axis?
OpenStudy (liv1234):
I'm not sure, but it seems like all of the domain and range things are the same. That's what is confusing me
hartnn (hartnn):
ok,
domain is just the set of all x values
range is the set of y values
hartnn (hartnn):
and 3/2, 0 will lie in x axis at 3/2 distance from Origin
so what you clicked isn't correct
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OpenStudy (liv1234):
My other assumption was that A is the answer.
hartnn (hartnn):
yes, its A :)
OpenStudy (liv1234):
Omg that was my first guess but I was thrown off. cx thank you! I have to catch up on my overdue work and really wanna watch Dragon Ball when I'm done lol. I appreciate your help.
hartnn (hartnn):
you're most welcome ^_^
Enjoy the awesome show ;)
OpenStudy (liv1234):
@hartnn I got stuck on a question, could you help?
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OpenStudy (liv1234):
hartnn (hartnn):
sure
hartnn (hartnn):
for direct variation
the ratio of y to x is constant
hartnn (hartnn):
when y = 72, x =18
so y/x = 72/18 = 4
hartnn (hartnn):
do that for ther set of values and see if you get the ratio as 4 or not
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OpenStudy (liv1234):
I'm confused.
hartnn (hartnn):
24/6 = 4 or not?
216/54 = 4 or not??
648/162 = 4 or not ??
OpenStudy (liv1234):
They are all true.
OpenStudy (liv1234):
Which means the answer is no?
hartnn (hartnn):
then its a direct varion with k=4 and y = kx :)
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OpenStudy (liv1234):
So, it would be A?
hartnn (hartnn):
yes
OpenStudy (liv1234):
Yay! Would you be able to help me with a couple more?
hartnn (hartnn):
I can try :)
OpenStudy (liv1234):
Thank you very much(:
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hartnn (hartnn):
y = kx
y = 2.52, x =8.4
so k = 2.52/8.4 = ... ?
OpenStudy (liv1234):
0.3?
OpenStudy (liv1234):
But, that's not one of the choices though
hartnn (hartnn):
because thats the value of k :)
y = kx = 2.7*0.3 = ... ?
the answer to that will be in the choices
OpenStudy (liv1234):
0.81 (:
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hartnn (hartnn):
yusss
OpenStudy (liv1234):
I have two more questions, can you still help? (:
hartnn (hartnn):
yes
OpenStudy (liv1234):
hartnn (hartnn):
1 1/3 = 1+1/3 = 4/3
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hartnn (hartnn):
so it would be w = 4/3 t
OpenStudy (liv1234):
So it can't be A or C?
hartnn (hartnn):
and if you multiply that by 5
we get 20/3 which is just 6 2/3
hartnn (hartnn):
its B :)
OpenStudy (liv1234):
Yay! Can you help me with one more?
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hartnn (hartnn):
sure
OpenStudy (liv1234):
OpenStudy (liv1234):
OpenStudy (liv1234):
OpenStudy (liv1234):
That's the question
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hartnn (hartnn):
y = 5/2 x
so when x =2, y will be 5
which line passes through origin and the point 2,5 ??
OpenStudy (liv1234):
D?
hartnn (hartnn):
nope
locate 2,5 on the graph
OpenStudy (liv1234):
Oh wait, it kinda looks like it is B.
OpenStudy (liv1234):
Omg wait, is it C?
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