Apps. and Interpretation for IBDP Maths Ebook 1 | Page 31

Exercise 6
1. Let
f x � x � x � . Part of the graph of f is shown below.
2
( ) 6 8
4
(a)
Find the x -intercepts of the graph.
(b) (i) Write down the equation of the axis of symmetry.
[4]
(ii)
Find the y -coordinate of the vertex.
[3]
2. Let
f x � x � x � . Part of the graph of f is shown below.
2
( ) 11 10
(a)
Find the x -intercepts of the graph.
(b) (i) Write down the equation of the axis of symmetry.
[4]
(ii)
Find the y -coordinate of the vertex.
[3]
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