3.5.5 - Relationship or constant from a graph

Determine a relationship between two variables or a constant from a graph, including finding a gradient with a large triangle.

Use - relationship or constant from a graph to connect the rule to the data and decision in the question.

This matters because - relationship or constant from a graph determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - relationship or constant from a graph to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Relationship or constant from a graph is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.