Some things to note:

Quadratic Expansion (Factorisation)

1) (a+b)(a+b) = (axb)(axa)+(bxa)(bxb)

2) a^2 + b^2 IS NOT ( a+b)^2

3) Do the expansion systematically

4) Write in alphabetical order so as to avoid a x b NOT= b x a

5) Write in order of power and u get =) Examiners

Notes for the topic: Linear Equations

1) Convert all equations to y=mx+c

2) Rise/Run -> Order matters

3) Drawings/sketches are a TOOL and NOT for ANSWERS

4) Example question:

y= 1/2x+c

so one has to substitute in (6,0) into the equation

so : 0 = -1/2(6) + c

ans: c= 3

y= 1/2x+3

Practice Question:

Line A cuts through the y-axis at (0,6) and it cuts the x-axis at (-6,0). Find the equation of the Line A.

Note: Sorry for being late in posting this up by a day. :(

Done by: Jonathan Soh- S101

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