Graphing Higher-Order Polynomials from Factorised Form

Read off the x-intercepts and y-intercept from a given factorised cubic or quartic equation and plot them on a set of axes.

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Te reo Māori terms

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Learning objective overview

Master Teaching Guide coverage for this objective.

Current NZC (2007)
  • No direct alignment recorded
New NZC (2026)
  • NZC26-P4-ALG-ER-P-Y10-03

Resources

Terminology

  • factorised form
  • x-intercept
  • y-intercept
  • root
  • repeated root
  • multiplicity
  • end behaviour
  • leading coefficient
  • turning point

Task goals

  • Foundation: Read off the x-intercepts and y-intercept from a given factorised cubic or quartic equation and plot them on a set of axes.
  • Proficient: Sketch the full graph of a factorised higher-order polynomial, correctly showing whether the curve crosses or touches the x-axis at each root based on its multiplicity and determining end behaviour from the degree and leading coefficient's sign.
  • Excellence: Given a sketch or description of a higher-order polynomial graph (intercepts, turning/touching points, and end behaviour), reconstruct its factorised equation, including cases with a repeated factor or a non-unit leading coefficient.

Where this fits

What leads into this objective, and where it goes next.

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Graphing Higher-Order Polynomials from Factorised Form

Graphing Higher-Order Polynomials from Factorised Form

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