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iGCSE (2021 Edition)

21.02 Function notation (Extended)

Interactive practice questions

Suppose that $\left(7,-6\right)$(7,6) is an ordered pair that satisfies the function $g$g. Write this situation using function notation.

Easy
1min

Consider the function $f\left(x\right)=8x+6$f(x)=8x+6.

Easy
< 1min

Consider the function $f\left(x\right)=-9x^2-8x-4$f(x)=9x28x4.

Easy
1min

Use the graph of the function $f\left(x\right)$f(x) to find each of the following values.

Easy
1min
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Outcomes

0580E2.9

f: x ⟼ 3x – 5, to describe simple functions. Find inverse functions f ^(–1)(x). Form composite functions as defined by gf(x) = g(f(x)).

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