Find the Slope of a Parallel Line y-4x=9

$y - 4 x = 9$

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.

$y = m x + b$

Add $4 x$ to both sides of the equation.

$y = 9 + 4 x$

Reorder $9$ and $4 x$ .

$y = 4 x + 9$

Using the slope-intercept form, the slope is $4$ .

$m = 4$

All lines that are parallel to $y = 4 x + 9$ have the same slope of $4$ .

$m_{parallel} = 4$