Simultaneous Equations (Junior Cert Mathematics): Flashcards

Set of 2 or more equations with shared variables

Find values that make all equations true at same time

Finding intersection point of two lines on a graph

Elimination method

Add/subtract equations so one variable cancels out

Label the equations

Multiply to make one variable's coefficients same

Add equations to eliminate one variable

Solve for the remaining variable

Substitute back to find the other variable

Check solutions in original equations

Verify solutions work in both original equations