Question 4 — IGCSE 0580 Oct/Nov 2023 Paper 32
Cambridge IGCSE Mathematics 0580, Core tier, calculator. Topic: Numbers · The four rules. Worth 8 marks.
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Question text
4 (a) Complete the table of values for y = x2-4x-2.
x -2 -1 0 1 2 3 4 5
y 3 -2 -5 -5 -2 3
[2]
(b) On the grid, draw the graph of y = x2-4x-2 for -2 G x G 5.
y
10
9
8
7
6
5
4
3
2
1
-2 -1 0 1 2 3 4 5 x
-1
-2
-3
-4
-5
-6
[4]
(c) Use your graph to solve the equation x2-4x-2 = 0.
x = ................... or x = ................... [2]
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