AC9M9M05 • Year 9 Maths

Mathematical modelling to solve practical problems involving direct proportion, rates (AC9M9M05)

recognise situations, including financial contexts, that use integers; locate and represent integers on a number line and as coordinates on the Cartesian plane

Choose a learning activity. Homework, Practice and Test use the same eight-question unit bank.

60-second Quick Read

  • use mathematical modelling to solve practical problems involving direct proportion, rates, ratio and scale, including financial contexts; formulate the problems and interpret…
  • Example: modelling situations involving direct proportion such as pro rata pay rates, exchange rates, multiple quotes for a job, conversion between scales or other appropriate science…
  • Common trap: modelling situations that impact on image editing used in social media and how proportion may not be maintained and can result in distorted images