Graph Using a Table of Values f(x)=9^x

$f (x) = 9^{x}$

Substitute $- 2$ for $x$ and find the result for $y$ .

$y = 9^{- 2}$

Simplify $9^{- 2}$ .

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$y = \frac{1}{9^{2}}$

Raise $9$ to the power of $2$ .

$y = \frac{1}{81}$

Substitute $- 1$ for $x$ and find the result for $y$ .

$y = 9^{- 1}$

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$y = \frac{1}{9}$

Substitute $0$ for $x$ and find the result for $y$ .

$y = 9^{0}$

Anything raised to $0$ is $1$ .

$y = 1$

Substitute $1$ for $x$ and find the result for $y$ .

$y = 9^{1}$

Evaluate the exponent.

$y = 9$

Substitute $2$ for $x$ and find the result for $y$ .

$y = 9^{2}$

Raise $9$ to the power of $2$ .

$y = 81$

This is a table of possible values to use when graphing the equation.

$\begin{array}{c} x & y \\ - 2 & \frac{1}{81} \\ - 1 & \frac{1}{9} \\ 0 & 1 \\ 1 & 9 \\ 2 & 81 \end{array}$