Topic 5 Vocabulary

What definition means constant?

• a quantity having a fixed value that does not change or vary, such as a number

• a relationship in which for every

  x units of one quantity there are y units of another quantity

• a number or formula used to convert quantities to

  equivalent amounts in a different system

• one of the numbers in a sequence, ratio or algebraic expression

What definition means ratio?

• a quantity having a fixed value that does not change or vary, such as a number

• a relationship in which for every

  x units of one quantity there are y units of another quantity

• a number or formula used to convert quantities to

  equivalent amounts in a different system

• one of the numbers in a sequence, ratio or algebraic expression

What definition means conversion factor?

• a quantity having a fixed value that does not change or vary, such as a number

• a relationship in which for every

  x units of one quantity there are y units of another quantity

• a number or formula used to convert quantities to

  equivalent amounts in a different system

• one of the numbers in a sequence, ratio or algebraic expression

What definition means term?

• a quantity having a fixed value that does not change or vary, such as a number

• a relationship in which for every

  x units of one quantity there are y units of another quantity

• a number or formula used to convert quantities to

  equivalent amounts in a different system

• one of the numbers in a sequence, ratio or algebraic expression

What definition means rate?

• a ratio that relates two quantities

  with different units
  

• relates a quantity to 1 unit of another quantity

• the distance around a circle

• a straight line passing through the centre of a circle to touch both sides of the circumference

What definition means unit rate?

• a ratio that relates two quantities

  with different units
  

• relates a quantity to 1 unit of another quantity

• the distance around a circle

• a straight line passing through the centre of a circle to touch both sides of the circumference

What definition means circumference?

• a ratio that relates two quantities

  with different units
  

• relates a quantity to 1 unit of another quantity

• the distance around a circle

• a straight line passing through the centre of a circle to touch both sides of the circumference

What definition means diameter?

• a ratio that relates two quantities

  with different units
  

• relates a quantity to 1 unit of another quantity

• the distance around a circle

• a straight line passing through the centre of a circle to touch both sides of the circumference

What definition means equivalent ratios?

• ratios that express the same relationship

• the ratio of the circumference of a circle to its diameter

• a unit rate that gives the price of one item

• convert measures by including measurement units when you multiply by a conversion factor

What definition means pi (𝝅)?

• ratios that express the same relationship

• the ratio of the circumference of a circle to its diameter

• a unit rate that gives the price of one item

• convert measures by including measurement units when you multiply by a conversion factor

• the speed stays the same over time