1. ©G Dear 2009 – Not to be sold/Free to use
General Mathematics
Preliminary
Modelling Linear
Relationships
Step-wise and
Piece-wise Graphs
Stage 6 - Year 11
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©G Dear 2009 – Not to be sold/Free to use

2. Step Graphs (1/2)
Step Functions are linear functions which change with the independent variable. 1 2 3 4 5 6 7 8 9
a) 1 hr =
$30
b) 2 hr =
$40
Dollars (x10)
c) 3 hr =
$40
d) 4.5 hr =
$50
e) 9 hr =
$70
f) 11 hr =
$70
Hours

3. Piecewise Graphs (2/2)
Piecewise Functions are linear functions which change rules with the independent variable. 1 2 3 4 5 6 7 8 9
a) 1 hr =
$30.00
b) 2 hr =
$45.00
Dollars (x10)
c) 3 hr =
$60.00
d) 4.5 hr =
$70.00
e) 9 hr =
$90.00
f) 11 hr =
$90.00
Hours