x

What does "make a letter the subject" mean?

What does "make a letter the subject" mean?

Flowchart showing p multiplied by 4 then increased by 13 to make z, with reverse arrows subtract 13 then divide by 4 to get p back

A formula links quantities, and the subject is the letter isolated on its own. If a question says "make xxx the subject", your final line should be x=somethingx = \text{something}x=something.

Changing the Subject of a Formula Lesson

  1. IGCSE
  2. /Maths
  3. /Changing the Subject of a Formula

Step-by-step lessons covering Oxford AQA IGCSE Maths Changing the Subject of a Formula for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.

Lessons

Reverse PercentagesStandard FormSpeed and DensityChanging the Subject of a FormulaExpanding and Factorising QuadraticsSolving QuadraticsDrawing Quadratic GraphsSimultaneous EquationsSimilar Shapes (Lengths)SOHCAHTOA (Trigonometry)Venn DiagramsData