Unit 2Unit 2FormulasFormulas

FoundationFoundation

10 % divide by 10 % divide by 1010

Estimate meansEstimate means

round and workout!round and workout!

The x axis is called y=0The x axis is called y=0

The y axis is called x=0The y axis is called x=0

Speed = distance ÷ timeSpeed = distance ÷ time

The opposite of square is The opposite of square is square rootsquare root

The opposite of cube isThe opposite of cube is cube root cube root

y x y = y²y x y = y²

y + y = 2yy + y = 2y

Equation of a straight line isEquation of a straight line is

y = +/- gradient y = +/- gradient xx +/- +/- InterceptIntercept

The Rules of indicesThe Rules of indices

aa44 x a x a5 5 = a = a99

aa77 ÷ a ÷ a3 3 = a = a44

(a(a66))3 3 = a= a18 18

ParallelParallel lines lineshave the same have the same

gradientgradient

A number in Standard A number in Standard Form is in two partsForm is in two parts

3.6 x 103.6 x 1066

To add and subtract To add and subtract fractionsfractions

the denominators must the denominators must be the samebe the same

To multiply fractions we To multiply fractions we multiplymultiply

top by top top by topbottom by bottombottom by bottom

Negative x negative = Negative x negative = PositivePositive

Positive x negative = Positive x negative = negativenegative

To divide fractions weTo divide fractions we

invert invert the second fractionthe second fraction

and multiplyand multiply

Solve meansSolve means

to find the value of to find the value of

x= or y=x= or y=

Simplify meansSimplify means

collect all the like terms.collect all the like terms.

Expand meansExpand means

remove the bracketsremove the brackets

Factorise meansFactorise means

put the brackets back in.put the brackets back in.

Factor (outside bracket)Factor (outside bracket)

Change the subjectChange the subjectmeansmeans

rearrange legally!!!rearrange legally!!!

Expanding double Expanding double bracketsbrackets

( x + 4 )( x - 3 )( x + 4 )( x - 3 )

Order of OperationsOrder of Operations

BracketsBracketsIndicesIndicesdivisiondivision

MultiplicationMultiplicationAdditionAddition

SubtractionSubtraction

Inequalities Inequalities

treat like antreat like an

equalsequals

For sequences find the For sequences find the ‘goes up in’‘goes up in’

and adjust.and adjust.