Cubic Graphs

OCR Module 8

You need Calculator, Graph Paper, Pencil & Ruler

-3 -2 -1 0 1 2 3

y = x3x -3 -2.5 -2 -1 0 1 2 2.5 3

y=x3 -27 -15.6 -8 -1 0 1 8 15.6 27

x

30

20

10

-10

-20

-30

x

x

x x x

x

x

x

y = x3- 2xx -2 -1 -0.5 0 0.5 1 2

x3

-2x

y

-0.125-8 -1 0 1 80.125

x

+1+4 +2 0 -2 -4-1

0.875-4 +1 0 -1 4-0.875

x -2 -1 -0.5 0 0.5 1 2

y -4 +1 0.875 0 -0.875 -1 4

-2 -1 0 1 2

4

2

0

-2

-4x

x x

x

x x

x

You are going to answer

Exercise 3.1A Page 165 Questions

1a,b – leave c for the moment 2a,b – leave c 3 – no graph! 4 – no graph! 6a – leave b