DFM Key skill:

• #634: Solve simultaneous linear equations requiring rearrangement.
• #636: Solve simultaneous equations in the form \(ax+by=c, \\ x^2+y^2=d\)

Task Commentary

Students typically have sufficient experience of solving simultaneous equations from GCSE and can do so successfully in most circumstances. However, some may have gaps in knowledge that will cause significant difficulties at A level.

Additionally, many students may not be proficient at solving linear simulantoues equations directly using their calculator. Setting this task for independent study means that it is unlikely that lesson time would need to be used to cover this topic.