core help...please :) URGENT

[Wezanator123]

How would you work out the residuals plot graph when looking at the regression line ?

E.g. 2010 VCAA exam 1 Q9

it looks to be B. just turn the original graph kind of on its side and its whatever residual plot that looks the most the same in terms of dot placement. that's my very simple way of looking at it haha

ahh ok lol thanks

[Wezanator123]

so when you turn it on it's side it "turns" the regression line as the x-axis ?

[Natters]

tha'ts all a regression line is really, check it out in the book its pretty simple shit mannnnnnnnn

[harlequinphoenix]

Is anyone reading this doing Graphs and Relations? I may need to ask help for a Q if I cannot work it out - am about to attempt it. Stay tuned.

Yes, I do graphs and relations. Will try my best to help

Ohh, thanks! Yea I have no idea. It is question 9 of GR, 2010 exam 1 ^_^ I never got around to asking about this Q and just found the exam in my folder.

oh dear

let h= height of the roof in metres
so we assume at length=b that,

h=1/2*b+3  (1)
h-1=-1/6*b+5  (2)

now we use simultaneous equation to solve this (this is where i use my cas)
so i solved it on my cas and it states b=4.5 and h=5.25
we only need to find the value b so therefore the answer is B
hope it helped guys

haha are you "oh dear"ing at my stupidity? This question just threw me haha, esp. being in G&R. why are those constraints to the right there? you didn't seem to use them in working it out. and why is the 10m there if we didnt need it? or am I just really retarded at this question

[Wezanator123]

lol ok coz we didn't get taught this at school

[chemkid_23]

Is anyone reading this doing Graphs and Relations? I may need to ask help for a Q if I cannot work it out - am about to attempt it. Stay tuned.

Yes, I do graphs and relations. Will try my best to help

Ohh, thanks! Yea I have no idea. It is question 9 of GR, 2010 exam 1 ^_^ I never got around to asking about this Q and just found the exam in my folder.

oh dear

let h= height of the roof in metres
so we assume at length=b that,

h=1/2*b+3  (1)
h-1=-1/6*b+5  (2)

now we use simultaneous equation to solve this (this is where i use my cas)
so i solved it on my cas and it states b=4.5 and h=5.25
we only need to find the value b so therefore the answer is B
hope it helped guys

why is the 2nd equation h-1?? is it because it is one metre lower than equation 1?

[harlequinphoenix]

so when you turn it on it's side it "turns" the regression line as the x-axis ?

KIND of. like they wouldn't tell you to do it in the textbook... but residuals are just how far the originals are from the line, and so the residual plot is going to look really similar to the original graph. i don't really go deeper than that, esp. if they only give you it to look at by eye

[spinaway]

can anyone help with 2010 VCAA CORE questions 7, 8 and 12?

i would love you forever   

[harlequinphoenix]

Is anyone reading this doing Graphs and Relations? I may need to ask help for a Q if I cannot work it out - am about to attempt it. Stay tuned.

Yes, I do graphs and relations. Will try my best to help

Ohh, thanks! Yea I have no idea. It is question 9 of GR, 2010 exam 1 ^_^ I never got around to asking about this Q and just found the exam in my folder.

oh dear

let h= height of the roof in metres
so we assume at length=b that,

h=1/2*b+3  (1)
h-1=-1/6*b+5  (2)

now we use simultaneous equation to solve this (this is where i use my cas)
so i solved it on my cas and it states b=4.5 and h=5.25
we only need to find the value b so therefore the answer is B
hope it helped guys

why is the 2nd equation h-1?? is it because it is one metre lower than equation 1?

yep

[chemkid_23]

can someone explain where the 141 came from for mc qs 8 core exam1

[harlequinphoenix]

can anyone help with 2010 VCAA CORE questions 7, 8 and 12?

i would love you forever   

exam 1?

[Keo]

Is anyone reading this doing Graphs and Relations? I may need to ask help for a Q if I cannot work it out - am about to attempt it. Stay tuned.

Yes, I do graphs and relations. Will try my best to help

Ohh, thanks! Yea I have no idea. It is question 9 of GR, 2010 exam 1 ^_^ I never got around to asking about this Q and just found the exam in my folder.

oh dear

let h= height of the roof in metres
so we assume at length=b that,

h=1/2*b+3  (1)
h-1=-1/6*b+5  (2)

now we use simultaneous equation to solve this (this is where i use my cas)
so i solved it on my cas and it states b=4.5 and h=5.25
we only need to find the value b so therefore the answer is B
hope it helped guys

haha are you "oh dear"ing at my stupidity? This question just threw me haha, esp. being in G&R. why are those constraints to the right there? you didn't seem to use them in working it out. and why is the 10m there if we didnt need it? or am I just really retarded at this question

nonoon not at that no way!! 'oh dear' because i did this before and its a pain in the ass
i didnt use the constraints as i was just finding b, if that makes sense sorry im not the greatest at explaining online D:

[harlequinphoenix]

can someone explain where the 141 came from for mc qs 8 core exam1

that isnt the answer is it? Because the y-int is clearly 167

[harlequinphoenix]

Is anyone reading this doing Graphs and Relations? I may need to ask help for a Q if I cannot work it out - am about to attempt it. Stay tuned.

Yes, I do graphs and relations. Will try my best to help

Ohh, thanks! Yea I have no idea. It is question 9 of GR, 2010 exam 1 ^_^ I never got around to asking about this Q and just found the exam in my folder.

oh dear

let h= height of the roof in metres
so we assume at length=b that,

h=1/2*b+3  (1)
h-1=-1/6*b+5  (2)

now we use simultaneous equation to solve this (this is where i use my cas)
so i solved it on my cas and it states b=4.5 and h=5.25
we only need to find the value b so therefore the answer is B
hope it helped guys

haha are you "oh dear"ing at my stupidity? This question just threw me haha, esp. being in G&R. why are those constraints to the right there? you didn't seem to use them in working it out. and why is the 10m there if we didnt need it? or am I just really retarded at this question

nonoon not at that no way!! 'oh dear' because i did this before and its a pain in the ass
i didnt use the constraints as i was just finding b, if that makes sense sorry im not the greatest at explaining online D:

ohk. i hate when they give info that you don't really need and so you think you're wrong cos you haven't used it to find the answer... haha

[spinaway]

can anyone help with 2010 VCAA CORE questions 7, 8 and 12?

i would love you forever   

exam 1?

yes please