(a) Copy and complete the following table for the relation \(y = \frac{5}{2} + x - 4x^{2}\)

x	-2.0	-1.5	-1.0	-0.5	0	0.5	1	1.5	2.0
y	-15.5			1	2.5

(b) Using a scale of 2cm to 1 unit on the x- axis and 2cm to 5 units on the y- axis, draw the graph of the relation for \(-2.0 \leq x \leq 2.0\).

(c) What is the maximum value of y?

(d) From your graph, obtain the roots of the equation \(8x^{2} - 2x - 5 = 0\)