(a) Copy and complete the following table of values for \(y = 2x^{2} - 9x - 1\). x -1 0 1 2 3 4 5 6 y -1 -8 -11 17 (b) Using a scale of 2cm to represent 1 u...

(a) Copy and complete the following table of values for \(y = 2x^{2} - 9x - 1\).

(b) Using a scale of 2cm to represent 1 unit on the x- axis and 2cm to represent 5 units on the y- axis, draw the graph of \(y = 2x^{2} - 9x - 1\).

(c) Use your graph to find the : (i) roots of the equation \(2x^{2} - 9x = 4\), correct to one decimal place ; (ii) gradient of the curve \(y = 2x^{2} - 9x - 1\) at x = 3.