C.3.12—Sketching modelled relationships

Sketch relationships modelled by reciprocal, inverse-square, square, linear, trigonometric and exponential functions. Exponential and squared-trigonometric forms are A2-only applications.

Use c.3.12—sketching modelled relationships to connect the rule to the data and decision in the question.

This matters because c.3.12—sketching modelled relationships determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply c.3.12—sketching modelled relationships to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: C.3.12—Sketching modelled relationships is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.