Find f -1 ( x ). $f ( x ) = - \frac { 9 } { 10 } x$
A) $f ^ { - 1 } ( x ) = \frac { 9 } { 10 } x$
B) $f ^ { - 1 } ( x ) = \frac { 10 } { 9 } x$
C) $f ^ { - 1 } ( x ) = - \frac { 10 } { 9 } x$

Question

Quizplus · Accepted Answer

To find the inverse, solve for x in terms of y: $y = -\frac{9}{10}x$. Rearranging gives $x = -\frac{10}{9}y$, so $f^{-1}(x) = -\frac{10}{9}x$.

Find F -1 ( X ) f(x)=−910xf ( x ) = - \frac { 9 } { 10 } xf(x)=−109​x

Find F -1 ( X ) $f ( x ) = - \frac { 9 } { 10 } x$