graciestewart13 graciestewart13

28-08-2016
Mathematics

contestada

Let f(x) = 7x − 13. Find f−1(x)

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dalendrk dalendrk

28-08-2016

[tex]f(x)=7x-13\\\\y=7x-13\ \ \ \ |add\ 13\ to\ both\ sides\\\\y+13=7x\ \ \ \ \ |divide\ both\ sides\ by\ 7\\\\x=\dfrac{y+13}{7}\\\\Answer:f^{-1}(x)=\dfrac{y+13}{7}[/tex]

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