Simultaneous Equations (Edexcel GCSE Maths): Flashcards
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What are simultaneous equations?
What are simultaneous equations?
A pair of equations solved together for two unknown variables
Meaning of 'simultaneous'
Meaning of 'simultaneous'
At the same time
Two types of simultaneous equations
Two types of simultaneous equations
Easy (two linear) and tricky (one linear, one quadratic)
'Easy' simultaneous equations
'Easy' simultaneous equations
Two linear equations (unknowns to first power only)
'Tricky' simultaneous equations
'Tricky' simultaneous equations
One linear and one quadratic equation
Method for easy simultaneous equations
Method for easy simultaneous equations
Elimination method
Method for tricky simultaneous equations
Method for tricky simultaneous equations
Substitution method
What is the elimination method?
What is the elimination method?
Match coefficients, then add or subtract to eliminate a variable
Standard form of linear equation
Standard form of linear equation
When to subtract in elimination method
When to subtract in elimination method
When coefficients have the same sign
When to add in elimination method
When to add in elimination method
When coefficients have opposite signs
How many solutions do tricky equations give?
How many solutions do tricky equations give?
Two different solutions (pairs of values)