The Student Room Group

Could please explain this to me (from the CGP)? So confused ?!!

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So basically why should we swap -3 and 1 around and change the sign of one of them??
(edited 8 years ago)
Reply 1
Original post by FluffyCherry
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need to be a bit more specific about the problem
Original post by TeeEm
need to be a bit more specific about the problem


I swear I literally forgot to write that!:colondollar:
Bump
Reply 4
Original post by FluffyCherry
Bump


we need to know what the question is i.e what are you finding hard
Original post by TeeEm
we need to know what the question is i.e what are you finding hard

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Why should we swap -3 and 1 around and change the sign of one of them??
Reply 6
Original post by FluffyCherry
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Why should we swap -3 and 1 around and change the sign of one of them??


these are meaningless ploys and toys of the CGP books

I do not know whether you are at GCSE or AS level

This is the GSCE version

x -3y -3 =0

rearrange in the form y = mx + c

x - 3 = 3y

divide by 3

y = (1/3) x - 1

gradient is 1/3

any perpendicular line will have as gradient the negative reciprocal of 1/3

in this case -3
(edited 8 years ago)
Original post by TeeEm
these are meaningless ploys and toys of the CGP books

I do not know whether you are at GCSE or AS level

This is the GSCE verson

x -3y -3 =0

rearrange in the form y = mx + c

x - 3 = 3y

divide by 3

y = (1/3) x - 1

gradient is 1/3

any perpendicular line will have as gradient the negative reciprocal of 1/3

in this case -3

I really hate CGP because of this
Reply 8
Original post by Student403
I really hate CGP because of this


Che CGP actual textbooks for A level are of decent quality.
(I believe they are written by a team of mathematicians)

Their Revision Guides for GCSE and A level are absolutely dreadful.
Original post by TeeEm
Che CGP actual textbooks for A level are of decent quality.
(I believe they are written by a team of mathematicians)

Their Revision Guides for GCSE and A level are absolutely dreadful.

Ah I've no experience with the textbooks - We tend to use the ones written by our exam board. Which exam board does CGP follow in its textbooks? Does it cater to all?
Reply 10
Original post by Student403
Ah I've no experience with the textbooks - We tend to use the ones written by our exam board. Which exam board does CGP follow in its textbooks? Does it cater to all?


I think their books are multi-board but they are really written for EDEXCEL
I saw a copy of these only very recently.
Original post by TeeEm
I think their books are multi-board but they are really written for EDEXCEL
I saw a copy of these only very recently.

Ah I see. We used their textbook for GCSE ICT (Edexcel). It was terrible. We do Edexcel for maths but use the ones written by the Pearson
Reply 12
Original post by Student403
Ah I see. We used their textbook for GCSE ICT (Edexcel). It was terrible. We do Edexcel for maths but use the ones written by the Pearson


The Pearson books are good in my opinion except the C1 to C4.
Original post by TeeEm
these are meaningless ploys and toys of the CGP books

I do not know whether you are at GCSE or AS level

This is the GSCE version

x -3y -3 =0

rearrange in the form y = mx + c

x - 3 = 3y

divide by 3

y = (1/3) x - 1

gradient is 1/3

any perpendicular line will have as gradient the negative reciprocal of 1/3

in this case -3


I see, Thaanx a bunch !! :smile:
Original post by TeeEm
The Pearson books are good in my opinion except the C1 to C4.

Hmm really? Interesting. I actually did best in Year 12 in C1-3, and did considerably worse in M1/S1 (All learnt with Pearson textbooks). I thought they were quite good because, through examples, they derived most expressions (especially in C3/C4) that ended up in the formula book.
Reply 15
Original post by FluffyCherry
I see, Thaanx a bunch !! :smile:


my pleasure

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