FP1.5.4 - Evaluation of 2 × 2 determinants

Evaluation of 2 × 2 determinants.; Singular and non-singular matrices.

Use fp1.5.4 - evaluation of 2 × 2 determinants to connect the rule to the data and decision in the question.

This matters because fp1.5.4 - evaluation of 2 × 2 determinants determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply fp1.5.4 - evaluation of 2 × 2 determinants to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: FP1.5.4 - Evaluation of 2 × 2 determinants is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.