(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 $-2.0\le x\le 2.0$.
(c) What is the maximum value of y?
(d) From your graph, obtain the roots of the equation $8x^2-2x-5=0$


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