Problems and Graphs (Leaving Cert Mathematics): Flashcards

Systems of 2+ equations sharing same variables that must be solved together

Translating word problems into mathematical equations

Identify the unknowns (decide variables to use)

$x$ & $y$ values satisfying both equations

A straight line

No solution

Infinite solutions

$x - 5$ years old

$x + 3$ years old

$2( ext{length} + ext{width})$

Keep units consistent (cents OR euros)

Mixing up which variable represents which quantity

Visual representation makes solution clear

May not give perfectly accurate answers

Two different pieces of information