anonymous
  • anonymous
Determine whether y varies directly with x. If so find the constant variation. y = 12x ****** The answer is Yes; 12 I dont understand how this is the answer. Can someone help me?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
my guess would be that its because y is equal to whatever 12(x) is going to be.
anonymous
  • anonymous
but that seems too easy
anonymous
  • anonymous
i know. How about y = 4x+1

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More answers

anonymous
  • anonymous
the asnwer is no
anonymous
  • anonymous
i am probably in over my head.. sorry
lgbasallote
  • lgbasallote
here's something you can remember... if y and x are in one line...then it's a direct variation if either y or x is in the denominator...then inverse variation
lgbasallote
  • lgbasallote
\[y = kx \leftarrow \; \text{direct variation}\] \[y = \frac kx \leftarrow \; \text{inverse variation}\]
anonymous
  • anonymous
ok so how does that apply to my first problem
lgbasallote
  • lgbasallote
y = 12x <--in the for y = kx <--can you see that?
lgbasallote
  • lgbasallote
in the form*
anonymous
  • anonymous
oh ok so how does it arie directly with x.. Im sorry im just not seeing the picture
anonymous
  • anonymous
varie* My teacher isnt that good
lgbasallote
  • lgbasallote
look at what i said above about y = kx
anonymous
  • anonymous
yeah I know but what does K mean how the flutter does it varie with anything?
lgbasallote
  • lgbasallote
k is a constant
lgbasallote
  • lgbasallote
it is called the proportionality constant
lgbasallote
  • lgbasallote
it means its value doesnt matter because it is constant..in other words...always stays the same
anonymous
  • anonymous
ok now I get why 12 is there.. So now explain the rest please?
lgbasallote
  • lgbasallote
in your terms... k is the constant variation
lgbasallote
  • lgbasallote
first tell me... do you agree that y = 12x is in the form y = kx?
anonymous
  • anonymous
is y = k? which is 12? and how does that varie to x?
anonymous
  • anonymous
Yeah I get that
lgbasallote
  • lgbasallote
what do you see as difference between \[\huge y = kx\] and \[\huge y = 12x\]
anonymous
  • anonymous
yeah I see that
lgbasallote
  • lgbasallote
spot the difference
lgbasallote
  • lgbasallote
not the similarity
anonymous
  • anonymous
yeah
lgbasallote
  • lgbasallote
what do you mean yeah?
anonymous
  • anonymous
I spot the difference
lgbasallote
  • lgbasallote
what's the difference??
anonymous
  • anonymous
12 instead of K
lgbasallote
  • lgbasallote
RIGHT! that's why 12 is the constant variation
lgbasallote
  • lgbasallote
because k is the constant variation..and k = 12
anonymous
  • anonymous
ohhh K= Constant Variationnnnnn
lgbasallote
  • lgbasallote
yes!
anonymous
  • anonymous
lmfao face to palm**
anonymous
  • anonymous
ok so what about this one y = 4x + 1
lgbasallote
  • lgbasallote
the answer to that one was "NOT direct variation" right?
anonymous
  • anonymous
yes
lgbasallote
  • lgbasallote
that's because of the 1 y = 4x + 1 is not in the form y = kx because of that 1
anonymous
  • anonymous
what about y - 6x = 0
anonymous
  • anonymous
;)
lgbasallote
  • lgbasallote
simplify it first
lgbasallote
  • lgbasallote
solve for y first
anonymous
  • anonymous
can you do it?
anonymous
  • anonymous
I dont wnana get confused
lgbasallote
  • lgbasallote
add 6x to both sides
anonymous
  • anonymous
add 6 to 0?
lgbasallote
  • lgbasallote
6x..not 6
anonymous
  • anonymous
yeah
anonymous
  • anonymous
y-=6x?
anonymous
  • anonymous
im a idiot
lgbasallote
  • lgbasallote
y-?
anonymous
  • anonymous
lmfao it was negative
anonymous
  • anonymous
OH NVM
anonymous
  • anonymous
alright so the answer is 6!
lgbasallote
  • lgbasallote
yes
anonymous
  • anonymous
what about y _ 3 = -3x
anonymous
  • anonymous
-
lgbasallote
  • lgbasallote
what do you think?
anonymous
  • anonymous
add 3 to both sides
anonymous
  • anonymous
y= x?
lgbasallote
  • lgbasallote
you can't combine 3 and 3x
anonymous
  • anonymous
is that a constant variation?
lgbasallote
  • lgbasallote
no..im just talking about algebra
anonymous
  • anonymous
Ah forget about that one can you help me with proportions? i'll open up a new question
lgbasallote
  • lgbasallote
i have to go soon
anonymous
  • anonymous
awe ur like the best lol
lgbasallote
  • lgbasallote
call saifoo or amistre
anonymous
  • anonymous
eh Saifoo is a fool now he used to be cool
anonymous
  • anonymous
amistre doesnt help me anymore

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