Verify if the two functions are inverses by showing that
f
(
g
(
x
)
)
=
x
\displaystyle {f{{\left({g{{\left({x}\right)}}}\right)}}}={x}
f
(
g
(
x
)
)
=
x
and
g
(
f
(
x
)
)
=
x
\displaystyle {g{{\left({f{{\left({x}\right)}}}\right)}}}={x}
g
(
f
(
x
)
)
=
x
.
f
(
x
)
=
1
x
−
7
−
9
x
+
7
\displaystyle {f{{\left({x}\right)}}}=\frac{{{1}{x}-{7}}}{{-{9}{x}+{7}}}
f
(
x
)
=
−
9
x
+
7
1
x
−
7
g
(
x
)
=
−
7
−
7
x
−
9
x
−
1
\displaystyle {g{{\left({x}\right)}}}=\frac{{-{7}-{7}{x}}}{{-{9}{x}-{1}}}
g
(
x
)
=
−
9
x
−
1
−
7
−
7
x
Not Inverses
Inverses
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