Graph x+4y<-4

$x + 4 y < - 4$

Step 1

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

Solve for $y$ .

Subtract $x$ from both sides of the inequality.

$4 y < - 4 - x$

Divide each term in $4 y < - 4 - x$ by $4$ and simplify.

Divide each term in $4 y < - 4 - x$ by $4$ .

$\frac{4 y}{4} < \frac{- 4}{4} + \frac{- x}{4}$

Simplify the left side.

Cancel the common factor of $4$ .

Cancel the common factor.

$\frac{4 y}{4} < \frac{- 4}{4} + \frac{- x}{4}$

Divide $y$ by $1$ .

$y < \frac{- 4}{4} + \frac{- x}{4}$

Simplify the right side.

Simplify each term.

Divide $- 4$ by $4$ .

$y < - 1 + \frac{- x}{4}$

Move the negative in front of the fraction.

$y < - 1 - \frac{x}{4}$

Rearrange terms.

$y < - \frac{x}{4} - 1$

Reorder terms.

$y < - (\frac{1}{4} x) - 1$

Remove parentheses.

$y < - \frac{1}{4} x - 1$

Step 2

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

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

$m = - \frac{1}{4}$

$b = - 1$

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

Slope: $- \frac{1}{4}$

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

Slope: $- \frac{1}{4}$

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

Step 3

Graph a dashed line, then shade the area below the boundary line since $y$ is less than $- \frac{1}{4} x - 1$ .

$y < - \frac{1}{4} x - 1$

Step 4