P1.1.3 - Quadratic functions and their graphs

Quadratic functions and their graphs.

Use quadratic functions and their graphs to connect the rule to the data and decision in the question.

This matters because quadratic functions and their graphs determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply quadratic functions and their graphs to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Quadratic functions and their graphs is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.