Solving equations and inequalities common mistakes

Common mistakes

• Iteration common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Use suffix notation in recursive formulae where required..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Iteration.

• Algebraic modelling common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Translate simple situations or procedures into algebraic expressions or formulae..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Algebraic modelling.

• Algebraic modelling common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Derive equations, solve them and interpret the solutions in context..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Algebraic modelling.

• Algebraic modelling common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Derive and solve two simultaneous equations from a contextual problem..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Algebraic modelling.

• Inequalities common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Solve linear inequalities in one variable and represent solution sets on a number line..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Inequalities.

• Inequalities common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Solve linear inequalities in one or two variables and quadratic inequalities in one variable..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Inequalities.

• Inequalities common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Represent inequality solutions using set notation and graphs..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Inequalities.