Question: a) Complete the table below for the equation y = x 3 3x 2 9x + 2. x -3 -2 -1 0 1

  1. a) Complete the table below for the equation y = x3 – 3x2 – 9x + 2.

x

-3

-2

-1

0

1

2

3

4

5

y = x3 – 3x2 – 9x + 2

2

-25

(2 Marks)

b) On the grid provided draw the graph of y = x3 – 3x2 – 9x + 2 for -3 < x < 5.

Use the scale: 1cm rep 1 unit on x – axis

1cm rep 5 units on y – axis (3 marks)

  1. i) Use your graph to solve the equation

x3 – 3x2 – 9x + 2 = 0 (2 marks)

ii) By drawing a suitable straight line on the graph solve the equation.

x3 – 3x2 – 9x + 2 = -2x – 4 (3 marks)

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