1. ©G Dear 2009 – Not to be sold/Free to use
General Mathematics
Preliminary
Modelling Linear
Relationships
Graphing Linear
Functions
Stage 6 - Year 11
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©G Dear 2009 – Not to be sold/Free to use

2. Graphing Linear Functions (1/3)
Y = 2x + 1
Independent Variable
The variable that we can replace.
Goes on the top row of the table x
Goes on horizontal axis. y
Dependent Variable y
The variable that depends on the other.
Goes on the bottom row of the table x
Goes on vertical axis.

3. Graphing Linear Functions (2/3)W H 10 20 30
400 W
150
300
450
300
200
100 10 20 30 H

4. Graphing Linear Functions (3/3)
C = 3n + 8 C n 1 2 3 20 C 11 14 17 15 10 5 1 2 3 n