Question

week 7 homework
practice score: 2.5/22 answered: 3/22
question 4
let $f(x)=14x + 15$
$f^{-1}(x)=$
question help: video
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Explanation:

Step1: Set $y = f(x)$

$y=14x + 15$

Step2: Swap $x$ and $y$

$x = 14y+15$

Step3: Solve for $y$

$x-15=14y$, then $y=\frac{x - 15}{14}$

Answer:

$f^{-1}(x)=\frac{x - 15}{14}$