(a) Copy and complete the table of values for y= 2x²-x-4 for-3 ≤x≤3.
X
y
-3
17
-2 -1
0
(c) Use the graph to find the:
-4
1
2 3
(b) Using a scale of 2 cm to 1 unit on the x-axis and 2 cm to 2 units on the y-axis,
draw the graph of y=2x²-x-4 for -3 ≤x≤3.
(i) roots of the equation 2x2-x-4 = 0;
(ii) values of x for which y increases as x increases,
(iii) minimum point of y.