Find the Inverse p(m)=m/6+9

$p (m) = \frac{m}{6} + 9$

Step 1

Write $p (m) = \frac{m}{6} + 9$ as an equation.

$y = \frac{m}{6} + 9$

Step 2

Interchange the variables.

$m = \frac{y}{6} + 9$

Step 3

Solve for $y$ .

Rewrite the equation as $\frac{y}{6} + 9 = m$ .

$\frac{y}{6} + 9 = m$

Subtract $9$ from both sides of the equation.

$\frac{y}{6} = m - 9$

Multiply both sides of the equation by $6$ .

$6 \frac{y}{6} = 6 (m - 9)$

Simplify both sides of the equation.

Simplify the left side.

Cancel the common factor of $6$ .

Cancel the common factor.

$6 \frac{y}{6} = 6 (m - 9)$

Rewrite the expression.

$y = 6 (m - 9)$

Simplify the right side.

Simplify $6 (m - 9)$ .

Apply the distributive property.

$y = 6 m + 6 \cdot - 9$

Multiply $6$ by $- 9$ .

$y = 6 m - 54$

Step 4

Replace $y$ with $p^{- 1} (m)$ to show the final answer.

$p^{- 1} (m) = 6 m - 54$

Step 5

Verify if $p^{- 1} (m) = 6 m - 54$ is the inverse of $p (m) = \frac{m}{6} + 9$ .

To verify the inverse, check if $p^{- 1} (p (m)) = m$ and $p (p^{- 1} (m)) = m$ .

Evaluate $p^{- 1} (p (m))$ .

Set up the composite result function.

$p^{- 1} (p (m))$

Evaluate $p^{- 1} (\frac{m}{6} + 9)$ by substituting in the value of $p$ into $p^{- 1}$ .

$p^{- 1} (\frac{m}{6} + 9) = 6 (\frac{m}{6} + 9) - 54$

Simplify each term.

Apply the distributive property.

$p^{- 1} (\frac{m}{6} + 9) = 6 (\frac{m}{6}) + 6 \cdot 9 - 54$

Cancel the common factor of $6$ .

Cancel the common factor.

$p^{- 1} (\frac{m}{6} + 9) = 6 (\frac{m}{6}) + 6 \cdot 9 - 54$

Rewrite the expression.

$p^{- 1} (\frac{m}{6} + 9) = m + 6 \cdot 9 - 54$

Multiply $6$ by $9$ .

$p^{- 1} (\frac{m}{6} + 9) = m + 54 - 54$

Combine the opposite terms in $m + 54 - 54$ .

Subtract $54$ from $54$ .

$p^{- 1} (\frac{m}{6} + 9) = m + 0$

Add $m$ and $0$ .

$p^{- 1} (\frac{m}{6} + 9) = m$

Evaluate $p (p^{- 1} (m))$ .

Set up the composite result function.

$p (p^{- 1} (m))$

Evaluate $p (6 m - 54)$ by substituting in the value of $p^{- 1}$ into $p$ .

$p (6 m - 54) = \frac{6 m - 54}{6} + 9$

Cancel the common factor of $6 m - 54$ and $6$ .

Factor $6$ out of $6 m$ .

$p (6 m - 54) = \frac{6 (m) - 54}{6} + 9$

Factor $6$ out of $- 54$ .

$p (6 m - 54) = \frac{6 (m) + 6 \cdot - 9}{6} + 9$

Factor $6$ out of $6 (m) + 6 (- 9)$ .

$p (6 m - 54) = \frac{6 (m - 9)}{6} + 9$

Cancel the common factors.

Factor $6$ out of $6$ .

$p (6 m - 54) = \frac{6 (m - 9)}{6 (1)} + 9$

Cancel the common factor.

$p (6 m - 54) = \frac{6 (m - 9)}{6 \cdot 1} + 9$

Rewrite the expression.

$p (6 m - 54) = \frac{m - 9}{1} + 9$

Divide $m - 9$ by $1$ .

$p (6 m - 54) = m - 9 + 9$

Combine the opposite terms in $m - 9 + 9$ .

Add $- 9$ and $9$ .

$p (6 m - 54) = m + 0$

Add $m$ and $0$ .

$p (6 m - 54) = m$

Since $p^{- 1} (p (m)) = m$ and $p (p^{- 1} (m)) = m$ , then $p^{- 1} (m) = 6 m - 54$ is the inverse of $p (m) = \frac{m}{6} + 9$ .

$p^{- 1} (m) = 6 m - 54$

Find the Inverse p(m)=m/6+9

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