Graph Using a Table of Values f(x)=(1/5)^x

$f (x) = {(\frac{1}{5})}^{x}$

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

$y = {(\frac{1}{5})}^{- 2}$

Solve the equation for $y$ .

Remove parentheses.

$y = {(\frac{1}{5})}^{- 2}$

Simplify ${(\frac{1}{5})}^{- 2}$ .

Change the sign of the exponent by rewriting the base as its reciprocal.

$y = 5^{2}$

Raise $5$ to the power of $2$ .

$y = 25$

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

$y = {(\frac{1}{5})}^{- 1}$

Solve the equation for $y$ .

Remove parentheses.

$y = {(\frac{1}{5})}^{- 1}$

Change the sign of the exponent by rewriting the base as its reciprocal.

$y = 5$

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

$y = {(\frac{1}{5})}^{0}$

Solve the equation for $y$ .

Remove parentheses.

$y = {(\frac{1}{5})}^{0}$

Simplify ${(\frac{1}{5})}^{0}$ .

Apply the product rule to $\frac{1}{5}$ .

$y = \frac{1^{0}}{5^{0}}$

Anything raised to $0$ is $1$ .

$y = \frac{1}{5^{0}}$

Anything raised to $0$ is $1$ .

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

Divide $1$ by $1$ .

$y = 1$

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

$y = {(\frac{1}{5})}^{1}$

Solve the equation for $y$ .

Remove parentheses.

$y = \frac{1}{5}$

Remove parentheses.

$y = \frac{1}{5}$

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

$y = {(\frac{1}{5})}^{2}$

Solve the equation for $y$ .

Remove parentheses.

$y = {(\frac{1}{5})}^{2}$

Simplify ${(\frac{1}{5})}^{2}$ .

Apply the product rule to $\frac{1}{5}$ .

$y = \frac{1^{2}}{5^{2}}$

One to any power is one.

$y = \frac{1}{5^{2}}$

Raise $5$ to the power of $2$ .

$y = \frac{1}{25}$

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

$\begin{array}{c} x & y \\ - 2 & 25 \\ - 1 & 5 \\ 0 & 1 \\ 1 & \frac{1}{5} \\ 2 & \frac{1}{25} \end{array}$

Graph Using a Table of Values f(x)=(1/5)^x

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