Question

evaluate functions and inverses from tables (level 1)
score: 0/2 penalty: none
question
find $f^{-1}(-7)$.

$x$

$f(x)$

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6

$-5$

5

$-2$

$-7$

7

$-17$

0

$-4$

$-7$

7

$-4$

answer attempt 1 out of 3

Explanation:

Step1: Recall inverse function definition

For inverse function $f^{-1}(y)=x$, $f(x)=y$.

Step2: Locate $f(x)=-7$ in table

Find row where $f(x)=-7$: $x=-4$

Answer:

$-4$