P3.4-Graph layout, plotting and trend lines

Label graph axes with quantity and unit, choose readable scales and false origins where appropriate, plot points accurately, draw best-fit lines or curves, and draw tangents to curves.

Use graph layout, plotting and trend lines to connect the rule to the data and decision in the question.

This matters because graph layout, plotting and trend lines determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply graph layout, plotting and trend lines to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Graph layout, plotting and trend lines is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.