Simultaneous Equations (Leaving Cert Mathematics): Flashcards
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Practise the cards
11 cards from this deck
What are simultaneous equations?
What are simultaneous equations?
Two or more equations satisfied by same variable values
Key requirement of solution in simultaneous eqs
Key requirement of solution in simultaneous eqs
Must satisfy all equations in the system
Primary solving method for simultaneous eqs
Primary solving method for simultaneous eqs
Elimination method
What elimination method does
What elimination method does
Eliminates one variable to solve for the other
Most critical step in elimination method
Most critical step in elimination method
Make coefficients equal for one variable
How to eliminate variable after equal coefficients
How to eliminate variable after equal coefficients
Add or subtract the equations
Step after finding first variable
Step after finding first variable
Substitute back into original equation
How to clear fractions from equations
How to clear fractions from equations
Multiply through by LCM of denominators
Choosing which variable to eliminate
Choosing which variable to eliminate
One requiring least manipulation
Why verify your solution
Why verify your solution
Check values satisfy both original equations
First step in elimination method
First step in elimination method
Number the equations