Graph y=-x-1 x-5y=-25

$y = - x - 1$ $x - 5 y = - 25$

Step 1

Graph $y = - x - 1$ .

Use the slope-intercept form to find the slope and y-intercept.

The slope-intercept form is $y = m x + b$ , where $m$ is the slope and $b$ is the y-intercept.

$y = m x + b$

Find the values of $m$ and $b$ using the form $y = m x + b$ .

$m = - 1$

$b = - 1$

The slope of the line is the value of $m$ , and the y-intercept is the value of $b$ .

Slope: $- 1$

y-intercept: $(0, - 1)$

Slope: $- 1$

y-intercept: $(0, - 1)$

Any line can be graphed using two points. Select two $x$ values, and plug them into the equation to find the corresponding $y$ values.

Create a table of the $x$ and $y$ values.

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

Graph the line using the slope and the y-intercept, or the points.

Slope: $- 1$

y-intercept: $(0, - 1)$

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

Slope: $- 1$

y-intercept: $(0, - 1)$

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

Step 2

Graph $x - 5 y = - 25$ .

Solve for $y$ .

Subtract $x$ from both sides of the equation.

$- 5 y = - 25 - x$

Divide each term in $- 5 y = - 25 - x$ by $- 5$ and simplify.

Divide each term in $- 5 y = - 25 - x$ by $- 5$ .

$\frac{- 5 y}{- 5} = \frac{- 25}{- 5} + \frac{- x}{- 5}$

Simplify the left side.

Cancel the common factor of $- 5$ .

Cancel the common factor.

$\frac{- 5 y}{- 5} = \frac{- 25}{- 5} + \frac{- x}{- 5}$

Divide $y$ by $1$ .

$y = \frac{- 25}{- 5} + \frac{- x}{- 5}$

Simplify the right side.

Simplify each term.

Divide $- 25$ by $- 5$ .

$y = 5 + \frac{- x}{- 5}$

Dividing two negative values results in a positive value.

$y = 5 + \frac{x}{5}$

Rewrite in slope-intercept form.

The slope-intercept form is $y = m x + b$ , where $m$ is the slope and $b$ is the y-intercept.

$y = m x + b$

Reorder $5$ and $\frac{x}{5}$ .

$y = \frac{x}{5} + 5$

Reorder terms.

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

Use the slope-intercept form to find the slope and y-intercept.

Find the values of $m$ and $b$ using the form $y = m x + b$ .

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

$b = 5$

The slope of the line is the value of $m$ , and the y-intercept is the value of $b$ .

Slope: $\frac{1}{5}$

y-intercept: $(0, 5)$

Slope: $\frac{1}{5}$

y-intercept: $(0, 5)$

Any line can be graphed using two points. Select two $x$ values, and plug them into the equation to find the corresponding $y$ values.

Write in $y = m x + b$ form.

Reorder $5$ and $\frac{x}{5}$ .

$y = \frac{x}{5} + 5$

Reorder terms.

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

Create a table of the $x$ and $y$ values.

$\begin{array}{c} x & y \\ 0 & 5 \\ 5 & 6 \end{array}$

Graph the line using the slope and the y-intercept, or the points.

Slope: $\frac{1}{5}$

y-intercept: $(0, 5)$

$\begin{array}{c} x & y \\ 0 & 5 \\ 5 & 6 \end{array}$

Slope: $\frac{1}{5}$

y-intercept: $(0, 5)$

$\begin{array}{c} x & y \\ 0 & 5 \\ 5 & 6 \end{array}$

Step 3

Plot each graph on the same coordinate system.

$y = - x - 1$

$x - 5 y = - 25$

Step 4

Graph y=-x-1 x-5y=-25

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