core help...please :) URGENT

[Wezanator123]

Anyone doing trig and geo here ?

[chemkid_23]

does anybody know if we can use our calculator during reading time??

[Natters]

lmfao at last minute questions ahhahaha
no calculator until the 15 minutes is up; and geometry <3 im doing it

[Wezanator123]

Good question, prob not because you can only "read"

[chemkid_23]

lmfao at last minute questions ahhahaha
no calculator until the 15 minutes is up; and geometry <3 im doing it

how sure are you about the calculator?

[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.

[Wezanator123]

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

E.g. 2010 VCAA exam 1 Q9

[abzzzz]

q9 graphs and relations gogggogo!

[Natters]

i almost got kicked out of my methods exam cuz i pulled out my calc during reading time
pretty sure.

[Wezanator123]

lmfao at last minute questions ahhahaha
no calculator until the 15 minutes is up; and geometry <3 im doing it

how sure are you about the calculator?

Ask a teacher before you go into the exam room, but you prob can't because you could technically solve questions before writing time starts, reading time is just for reading through the paper

[Natters]

if you can then i've been ripped off of 15 minutes~4 qustions at least in that exam >.>

[chemkid_23]

ill ask to make sure because if you can you could do a whole module in those 15 mins

[harlequinphoenix]

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

[Natters]

simplest is often the best; that's how you do it

[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