I'm confused in the constant proportionality and the way you set it up

The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate. The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other. Once you know the constant of proportionality you can find an equation representing the directly proportional relationship between x and y, namely y=kx, with your specific k. Hope this helps!

This is so confusing and it makes me very mad

Hey, don't worry. Everyone has their least favorite subjects. If you look at the comment above, they explain how to find it. There is also another equation, but thats for later.

why is school so boring

it’s because its a feature for the matrix

This is a bit confusing I still don’t get it

So, Y (the up and down part of the graph) equals K (The constant of proportionality, you get it by dividing Y by X), times X (the side by side part of the graph.) This would equal= Y=KX Then you look for a clear place where you can place a point, (I would recommend using graph paper for this) say, (4,8) and then you take the Y (X,Y) which is 8 and divide it by the X, which is 4 to get 2. So, K=2. Now lets check it. 8=2(4) 8=8 I hope this was helpful!

what if you ha 0.5 on and 1 on x how would you write that?

If 0.5=Y, 1=X. This is going to get a bit confusing, but I will say, I typically prefer more cleaner numbers. (On graph paper) 0.5=K1 0.5/1=K 0.5=K. (you divided 0.5/1) Now lets add it back in to see if we're correct. 0.5=0.5(1) 0.5=0.5 (you times 0.5*1) I hope this was helpful!

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Constant of proportionality from graph

Name: Constant of proportionality from graph
Uploaded: 2018-09-07T17:54:12Z
Description: Sal finds constant of proportionality by looking at the graph of a line.

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Sal finds constant of proportionality by looking at the graph of a line.

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Josmar Jean
Posted 4 years ago. Direct link to Josmar Jean's post “I'm confused in the const...”
I'm confused in the constant proportionality and the way you set it up
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- 𝕯𝖎𝖆𝖒𝖔𝖓𝖉 𝕯𝖆𝖗𝖐𝖍𝖊𝖆𝖗𝖙 ⛬ #IgnisaurRules
  Posted 3 years ago. Direct link to 𝕯𝖎𝖆𝖒𝖔𝖓𝖉 𝕯𝖆𝖗𝖐𝖍𝖊𝖆𝖗𝖙 ⛬ #IgnisaurRules's post “The constant of proportio...”
  The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate.
  The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other. Once you know the constant of proportionality you can find an equation representing the directly proportional relationship between x and y, namely y=kx, with your specific k.
  Hope this helps!
  Comment on 𝕯𝖎𝖆𝖒𝖔𝖓𝖉 𝕯𝖆𝖗𝖐𝖍𝖊𝖆𝖗𝖙 ⛬ #IgnisaurRules's post “The constant of proportio...”
  (30 votes)
RickyG
Posted 3 years ago. Direct link to RickyG's post “This is so confusing and ...”
This is so confusing and it makes me very mad
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(26 votes)
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- Inforaptor
  Posted 2 years ago. Direct link to Inforaptor's post “Hey, don't worry. Everyon...”
  Hey, don't worry. Everyone has their least favorite subjects. If you look at the comment above, they explain how to find it. There is also another equation, but thats for later.
  Comment on Inforaptor's post “Hey, don't worry. Everyon...”
  (14 votes)
▓▒░.-.JustPayton.-.░▒▓
Posted 3 years ago. Direct link to ▓▒░.-.JustPayton.-.░▒▓'s post “Am i the only one who loo...”
Am i the only one who looks at the comments lol
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- 27jtran20
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  no you are not
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27jtran20
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Thanks khan you're better than my math teacher
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Hayden
Posted a year ago. Direct link to Hayden's post “why is school so boring”
why is school so boring
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- Mitchell Pacheco
  Posted a year ago. Direct link to Mitchell Pacheco's post “it’s because its a featur...”
  it’s because its a feature for the matrix
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Joanna <3
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i hate life :)
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- VALERIE!!
  Posted 24 days ago. Direct link to VALERIE!!'s post “at this point me too 😁”
  at this point me too 😁
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barrett.lyle
Posted 5 months ago. Direct link to barrett.lyle's post “noob here”
noob here
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Cindy Chen
Posted 3 years ago. Direct link to Cindy Chen's post “This is a bit confusing I...”
This is a bit confusing I still don’t get it
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- Zoe baranowski
  Posted 3 years ago. Direct link to Zoe baranowski's post “So, Y (the up and down pa...”
  So, Y (the up and down part of the graph) equals K (The constant of proportionality, you get it by dividing Y by X), times X (the side by side part of the graph.)
  
  This would equal= Y=KX
  
  Then you look for a clear place where you can place a point, (I would recommend using graph paper for this) say, (4,8) and then you take the Y (X,Y) which is 8 and divide it by the X, which is 4 to get 2.
  
  So, K=2.
  
  Now lets check it.
  
  8=2(4)
  8=8
  
  I hope this was helpful!
  Comment on Zoe baranowski's post “So, Y (the up and down pa...”
  (10 votes)
Ahmad Shaheer
Posted 4 years ago. Direct link to Ahmad Shaheer's post “what if you ha 0.5 on and...”
what if you ha 0.5 on and 1 on x how would you write that?
Button navigates to signup pageComment on Ahmad Shaheer's post “what if you ha 0.5 on and...”
(5 votes)
Answer
- Zoe baranowski
  Posted 3 years ago. Direct link to Zoe baranowski's post “If 0.5=Y, 1=X. This is g...”
  If 0.5=Y, 1=X.
  
  This is going to get a bit confusing, but I will say, I typically prefer more cleaner numbers. (On graph paper)
  
  0.5=K1
  0.5/1=K
  0.5=K. (you divided 0.5/1)
  
  Now lets add it back in to see if we're correct.
  
  0.5=0.5(1)
  0.5=0.5 (you times 0.5*1)
  
  I hope this was helpful!
  Comment on Zoe baranowski's post “If 0.5=Y, 1=X. This is g...”
  (7 votes)
Layne Farmson
Posted 2 months ago. Direct link to Layne Farmson's post “Y am i doing this”
Y am i doing this
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Video transcript

- [Instructor] The following graph shows a proportional relationship. What is the constant of proportionality between y and x in the graph? Pause this video, and see if you can figure that out. All right, now let's do this together, and let's remind ourselves what a constant of proportionality even is. If we know that there is a proportional relationship between y and x, then there will be a constant of proportionality between these variables, and what this is, is it is a number that I would have to multiply x by to get to y. So I could make a little table here, as we often do when we describe proportional relationships, x and y. We know that when x is zero, y is zero. But if I multiply zero by anything, I'm gonna get zero. But then when x is one, what is y? When x is one, y is three. They mark it right over there. When x is two, what is y? X is two, we see that y is six. So our constant of proportionality is what are we multiplying x by to get to y? Well, let's see, to go from one to three, I have to multiply by three. To go from two to six, I have to multiply by three. Another way to think about it is we could write the equation y is equal to something times x. The number that we multiply x by to get y is our constant of proportionality. And we've seen, in all of these situations, this should be true for any point on this line. You give the x, you multiply it by three, you get your y. So the relationship here is y is equal to three x. So three is our constant of proportionality.

Get ready for 8th grade

Course: Get ready for 8th grade > Unit 3

Constant of proportionality from graph

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