Practical Applications of Simultaneous Equations (VCE SSCE General Mathematics): Flashcards

Problems with 2 unknowns related in 2 different ways

Define unknown quantities with appropriate variables

Define your variables with units

Check solution by substitution (LHS = RHS)

State answer in words with units and context

Shopping/pricing, geometry, ticket sales

$2w + 2l = P$ where $w$ is width, $l$ is length

Substitute into original equation, check LHS = RHS

Forgetting to define variables before equations

Quantity information and financial information