©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 Press Ctrl-A ©G Dear 2009 – Not to be sold/Free to use

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

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