M.4-Graphs, gradients, intercepts and areas

Select variables and scales, determine gradients/intercepts/intersections, draw best-fit or curved trend lines, recognise common graph forms, use tangents to curves and use area under a curve where physically meaningful.

Use m.4-graphs, gradients, intercepts and areas to connect the rule to the data and decision in the question.

This matters because m.4-graphs, gradients, intercepts and areas determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply m.4-graphs, gradients, intercepts and areas to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: M.4-Graphs, gradients, intercepts and areas is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.