Support · Mathematics Standard 11–12 – Year 11 · Formulas and equations

Support Change the subject of linear and non-linear formulas limited to quadratics of the form y = ax² + c to solve problems and make decisions about solutions in the context of the problem

Resources for the prerequisite content of this dot point: earlier-stage (or earlier sub-level) dot points in the same strand that students usually need first. Use these to fill gaps before or alongside the core lesson.

Prerequisite links are draft mappings generated from the syllabus structure (earlier stage, same strand, closest content). They are being reviewed by teachers. Spot a poor match? Tell us.

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Prerequisite dot points

Change the subject of a formula

Stage 5 · Equations C (Path) Draft mapping

Apply the quadratic formula x = (- b±√(b² - 4ac))/(2a) to solve quadratic equations

Stage 5 · Equations C (Path) Draft mapping

  • Interactive toolStarter
    Maths Is Fun: Quadratic equations
    Maths Is Fun · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: The quadratic formula and discriminant with an interactive graph.
  • Corbettmaths practice questions: Quadratics: formula
    Corbettmaths · Web page · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Free printable graded practice questions (with answers) on quadratics: formula for drill or a quick check.
  • WorksheetDrill
    Kuta free worksheet: Quadratic formula
    Kuta Software · PDF · Printable PDF · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Printable skills-practice sheet with answer key on quadratic formula; good for drill or homework.
  • VideoStarter
    Corbettmaths video: Quadratics: formula
    Corbettmaths · Video · Free · Link checked 2026-10-15 · No prep
    Use it for: Short worked-example video on quadratics: formula to model the method before practice or for flipped revision.

Solve quadratic equations of the form ax² + bx + c = 0, limited to a = 1, using factors

Stage 5 · Equations B (Path) Draft mapping