Apps. and Interpretation for IBDP Maths Ebook 1 | Page 36

Your Practice Set – Applications and Interpretation for IBDP Mathematics
Exercise 8
1. The graph of a quadratic function y � f ( x)
is given below.
It is given that the x -intercepts are � 4 and 8, and the y -coordinate of the vertex is 17.
(a)
(b)
Write down the equation of the axis of symmetry.
Write down the coordinates of the maximum point.
(c) Write down the range of f( x ).
[2]
[1]
[2]
2. The graph of a quadratic function y � f ( x)
is given below.
It is given that one of the x -intercepts is 10 and the equation of the axis of symmetry is
x � 7 .
(a)
Write down the other x -intercept.
It is given that f (7) �� 2.
(b)
Write down the coordinates of the vertex.
(c) Write down the range of f( x ).
[2]
[1]
[2]
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