Step 7 Objective
Plot the graphs of linear functions, where y is given explicitly in terms of x; recognise that equations of the form y = mx + c correspond to straight-line graphs.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
What if pupils find this a barrier?
See Step 5.
It may help pupils to see and use the links between equations in words,
plotted graphs and tables of coordinates. See Teaching
mental mathematics from Level 5: algebra p. 21: matching activities - Acrobat pdf document (36Kb).
Difficulties may also arise in:
- manipulation of positive and negative numbers;
- 'reading' the equation and understanding what it means.
If necessary refer to Step 6 in Properties of Number, Integers, Powers and Roots or Step 6 in Equations, Formulae and Identities.