1
Q
What is the method for expanding two brackets
A
FOIL
First Outside Inside Last
2
Q
Quadratic formula
A
3
Q
What are the rules of indices
A
4
Q
Direct proportion
A
y=kx
5
Q
Indirect proportion
A
y=k/x
6
Q
General equation of a straight line
A
y = mx + c
m = gradient
c = y intercept
7
Q
Gradient formula
A
y2 -y 1 / x2 - x1
Rise / run
8
Q
Parallel lines have the same…
A
Gradient
9
Q
Formula for ding the length of a side or angle of a right angled triangle
A
SohCahToa
Sinex = opposite/ adjacent
Cosx = adjacent/ hypotenuse
Tanx = opposite/ adjacent
10
Q
Pythagorus theorem
A
11
Q
The gradient of a perpendicular line
A
The opposite of the line given
12
Q
Midpoint of a line formula
A
13
Q
Length of a line on a graph formula
A
IGCSE Math Formulas
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