Algebra Examples

$f (x) = 9 x$ $g (x) = \frac{1}{9} x$

Step 1

Set up the composite result function.

$f (g (x))$

Step 2

Evaluate $f (\frac{1}{9} x)$ by substituting in the value of $g$ into $f$ .

$f (\frac{1}{9} x) = 9 (\frac{1}{9} x)$

Step 3

Combine $\frac{1}{9}$ and $x$ .

$f (\frac{1}{9} x) = 9 (\frac{x}{9})$

Step 4

Cancel the common factor of $9$ .

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Step 4.1

Cancel the common factor.

$f (\frac{1}{9} x) = 9 (\frac{x}{9})$

Step 4.2

Rewrite the expression.

$f (\frac{1}{9} x) = x$