# maths calc paper

- Created by: Meghan1714
- Created on: 20-06-19 19:48

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- maths paper 2
- index laws
- when multiplying, add powers
- when dividing, subtract powers
- when raised to another power, multiply them
- anything to the power of 1 doesn't change
- anything to the power of 0 is 1
- when dealing with fractions, powers apply to both parts

- HCF and LCM
- to find LCM, list both of their factors and find the smallest in each list
- to find HCF, list the prime factors which appear in both and multiply them all together

- finding line equations/drawing lines
- 1. find the gradient (m) 2. find the 'm' value for the second line 3. put values into y = mx + c 4. put in the x and y values to find c 5. write out full equation
- gradient = change in x/change in y

- 1. find the gradient (m) 2. find the 'm' value for the second line 3. put values into y = mx + c 4. put in the x and y values to find c 5. write out full equation
- ratios
- to get a ratio to its simplest form, you need to find the HCF and divide both sides by it

- functions
- to find functions, just substitute the values into the equation given

- enlargement
- scale factor = n.length/o.length

- probability
- probabilities add to 1
- probability = no. of outcomes/total outcomes

- vectors
- vectors represent the movement of a size in a direction
- multiplying vectors changes size, not direction (scales it)

- histograms
- frequency density = frequency/ class width
- frequency = FD X class width

- index laws

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