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Inverse Functions 1 worksheet

Name:                                    Date:
Write down the inverse function f^{-1}(x) given:

Question 1:     f(x)=5x-2Question 2:     f(x)=3x^2
Question 3:     f(x)=x-7Question 4:     f(x)=7x+4
Question 5:     f(x)=8\sqrt{x}Question 6:     f(x)=7(x-2)
Question 7:     f(x)=6(x+9)Question 8:     f(x)=5-x
Question 9:     f(x)={\Large\frac{x}{3}}Question 10:     f(x)={\Large\frac{5}{2}}x
Question 11:     f(x)={\Large\frac{3}{2}}xQuestion 12:     f(x)=x-8
Question 13:     f(x)=4-xQuestion 14:     f(x)=\sqrt{4x}
Question 15:     f(x)={\Large\frac{2}{x}}Question 16:     f(x)=(5x)^2
Question 17:     f(x)={\Large\frac{x}{9}}Question 18:     f(x)={\Large\frac{6}{x}}
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Answers

Question 1:     f^{-1}(x)={\Large\frac{x+2}{5}}
Question 2:     f^{-1}(x)=\Large \sqrt \frac{x}{3}
Question 3:     f^{-1}(x)=x+7
Question 4:     f^{-1}(x)={\Large\frac{x-4}{7}}
Question 5:     f^{-1}(x)={\Large\frac{x^2}{64}}
Question 6:     f^{-1}(x)={\Large\frac{x}{7}}+2
Question 7:     f^{-1}(x)={\Large\frac{x}{6}}-9
Question 8:     f^{-1}(x)=5-x
Question 9:     f^{-1}(x)=3x
Question 10:     f^{-1}(x)={\Large\frac{2}{5}}x
Question 11:     f^{-1}(x)={\Large\frac{2}{3}}x
Question 12:     f^{-1}(x)=x+8
Question 13:     f^{-1}(x)=4-x
Question 14:     f^{-1}(x)={\Large\frac{x^2}{4}}
Question 15:     f^{-1}(x)={\Large\frac{2}{x}}
Question 16:     f^{-1}(x)=\Large \frac{\sqrt x}{5}
Question 17:     f^{-1}(x)=9x
Question 18:     f^{-1}(x)={\Large\frac{6}{x}}
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