1 Press ‘Ctrl-A’ © G Dear 2009 (Free to use. May not be sold) Year 12 - General.

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1 Press ‘Ctrl-A’ © G Dear 2009 (Free to use. May not be sold) Year 12 - General

Cubic Functions (1/5) The independent variable has a power of 3. The independent variable has a power of 3. y = ax 3 1 When graphed they appear as a cubic graph. When graphed they appear as a cubic graph. The dependent variable has a power of 1. The dependent variable has a power of 1. 2

x y 4 Cubic Function y = x 3 (2/5) x01234 y y=x 3

x y 4 Cubic Function y = 2x 3 (3/5) x01234 y y=x 3 y=2x 3

x y 4 Cubic Function y = ½x 3 (4/5) x01234 y 0 ½ ½ 5 y=x 3 y=2x 3 y=½x 3

x4 3 y Cubic Function y = -x 3 (4/5) x01234 y y=-x 3